6Subject Analysis Block
Definition and Scope of Fields
600 Personal Name Used as Subject
601 Corporate Body Name Used as Subject
602 Family Name Used as Subject
604 Name and Title Used as Subject
605 Title Used as Subject
606 Topical Name Used as Subject
607 Geographical Name Used as Subject
608 Form, Genre or Physical Characteristics Heading
610 Uncontrolled Subject Terms
615 Subject Category (Provisional)
620 Place Access
626 Technical Details Access (Electronic Resources) (Obsolete)
Subject analysis
660 Geographic Area Code (GAC)
661 Time Period Code
670 PRECIS
Classification
675 Universal Decimal Classification (UDC)
676 Dewey Decimal Classification (DDC)
680 Library of Congress Classification
686 Other Class Numbers
600 PERSONAL NAME USED AS SUBJECT
Field Definition
This field contains the name of a person who is one of the subjects of the item, in access point form, with the optional addition of extra subject information.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: Form of Name Indicator
This indicator specifies whether the name is entered under the first occurring name (forename) or a name in direct order or whether it is entered under a surname, family name, patronymic or equivalent, usually with inversion.
0 Name entered under forename or in direct order (EX 3, 4)
1 Name entered under surname (family name, patronymic etc.) (EX 1, 2, 5)
Subfields
$a Entry Element
$b Part of Name Other than Entry Element
$c Additions to Name Other than Dates
Any additions to names (other than dates) which do not form an integral part of the name itself including titles, epithets or indications of office. Repeatable for second and subsequent occurrences of such additions.
$d Roman Numerals
Roman numerals associated with names of certain popes, royalty and ecclesiastics. If an epithet (or a further forename) is associated with the numeration, this too should be included (EX 4). The form of name indicator should be set to 0 when this subfield is used. Not repeatable.
$f Dates
The dates attached to personal names together with abbreviations or other indications of the nature of the dates. Any indications of the type of date (e.g., flourished, born, died) should also be entered in the subfield in full or abbreviated form (EX 5). All the dates for the person named in the field should be entered in $f. Not repeatable.
$g Expansion of Initials of Forename
The full form of forenames when initials are recorded in subfield $b as the preferred form and when both initials and the full form are required. Not repeatable.
$j Form Subdivision
The description of this subfield can be found above the description of $x.
$p Affiliation/address
This subfield contains the institutional affiliation of the individual at the time the work was prepared. Not repeatable.
$t Title
Not used. For author/title subject headings, use field 604 NAME AND TITLE USED AS SUBJECT.
$j Form Subdivision
A term added to the subject heading to further specify the kind(s) or genre(s) of material (EX 2). Agencies not using this subdivision should use $x instead. Repeatable.
$x Topical Subdivision
A term added to a subject heading to further specify the topic the subject heading represents (EX 2, 3, 5). Repeatable.
$y Geographical Subdivision
A term added to a subject heading to specify a place in relation to a person which the subject heading represents (EX 3, 5). Repeatable.
$z Chronological Subdivision
A term added to a subject heading to specify the period in time in relation to a person whom the subject heading represents. Repeatable.
$2 System Code
An identification in coded form of the system or thesaurus from which the subject heading is derived. It is recommended that subfield $2 always be present in each occurrence of the field. For a list of system codes, see Appendix G. Not repeatable.
$3 Authority Record Number
The control number for the authority record for the heading. This subfield is for use with UNIMARC/Authorities. Not repeatable.
601 CORPORATE BODY NAME USED AS SUBJECT
Field Definition
This field contains the name of a corporate body which is one of the subjects of the item, in access point form, with the optional addition of extra subject information.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: Meeting Indicator
The first indicator specifies whether the corporate body is a meeting or not. Meetings include conferences, symposia, etc. If the name of the meeting is a subdivision of the name of a corporate body, then the name is regarded as that of a corporate body (EX 10).
0 Corporate name
1 Meeting
If the source format does not distinguish meeting names from other corporate names, the indicator position should contain the fill character.
Indicator 2: Form of Name Indicator
The second indicator denotes the form of the corporate name as follows:
0 Name in inverted order
An inverted form may be used when the first word of a corporate name or meeting begins with an initial or forename relating to a personal name.
1 Name entered under place or jurisdiction
Used for corporate names relating to governments or other agencies of jurisdiction that are entered under the name of the place. According to certain cataloguing codes other kinds of institutions which are associated with a place are also entered under that place, e.g., universities, learned societies, art galleries (EX 9).
2 Name entered under name in direct order
Used for all other kinds of corporate names. (EX 1-8, 10).
Subfields
$a Entry Element
The portion of the name used as the entry element in the heading; that part of the name by which the name is entered in ordered lists; i.e. the part of the name up to the first filing boundary. This subfield is not repeatable but must be present if the field is present.
$b Subdivision (or name if entered under place)
The name of a lower level in a hierarchy when the name includes a hierarchy; or the name of the corporate body when it is entered under place (EX 9). This subfield excludes additions to the name added by the cataloguer to distinguish it from other institutions of the same name (see $c, $g, $h). Repeatable if there is more than one lower level in the hierarchy.
$c Addition to Name or Qualifier
Any addition to the name of the corporate body added by the cataloguer, other than number, place and date of conference. Repeatable. (EX 4, 5, 7, 
$d Number of Meeting and/or Number of Part of a Meeting
The number of a meeting when the meeting belongs to a numbered series. Not repeatable. (EX 10)
$e Location of Meeting
The place where a meeting was held when it is required as part of the heading. Not repeatable. (EX 10)
$f Date of Meeting
The date of a meeting when it is required as part of the heading. Not repeatable. (EX 10)
$g Inverted Element
Any part of the name of the corporate body which is removed from the beginning of the name in order to enter the body under a word which is more likely to be sought. Not repeatable.
$h Part of Name other than Entry Element and Inverted Element
In a heading with an inverted element, the part of the name following the inversion. Not repeatable.
$j Form Subdivision
The description of this subfield can be found above the description of $x.
$t Title
Not used. For author/title subject headings, use field 604 NAME AND TITLE USED AS SUBJECT.
$j Form Subdivision
A term added to the subject heading to further specify the kind(s) or genre(s) of material (EX 2, 3). Agencies not using this subdivision should use $x instead. Repeatable.
$x Topical Subdivision
A term added to a subject heading to further specify the topic the subject heading represents (EX 2, 3, 5, 6, 8). Repeatable (EX 2)
$y Geographical Subdivision
A term added to a subject heading to specify a place in relation to a corporate body which the subject heading represents. Repeatable. (EX 6)
$z Chronological Subdivision
A term added to a subject heading to specify the period in time in relation to a corporate body which the subject heading represents. Repeatable (EX 9).
$2 System Code
An identification in coded form of the system from which the subject heading is derived. It is recommended that subfield $2 always be present in each occurrence of the field. For a list of system codes, see Appendix G. Not repeatable.
$3 Authority Record Number
The control number for the authority record for the heading. This subfield is for use with UNIMARC/Authorities. Not repeatable.
Notes on Field Contents
This field is intended for recording headings for corporate names used as subjects. These headings are structured in the same form as corporate body name headings for bodies responsible for the contents of an item. Subfields $a, $b, $c, $d, $e, $f, $g and $h follow the same form as in field 710, and further explanation of the scope and content of these subfields can be found there.
Unlike field 710, this field can contain more than the name of the corporate body and additions to the name. Terms may be added to a subject heading to further specify it with respect to form, topic, place or time.
Political jurisdictions subdivided by names of subordinate bodies are entered in this field (EX 9). If the name of a political jurisdiction appears alone or is subdivided only by subject terms, it is entered in field 607.
602 FAMILY NAME USED AS SUBJECT
Field Definition
This field contains the name of a family which is one of the subjects of the item, in access point form, with the optional addition of extra subject information.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Entry Element
The name of the family in access point form. Not repeatable.
$f Dates
The dates of a family when they are required as part of the heading. Not repeatable (EX 2).
$j Form Subdivision
The description of this subfield can be found above the description of $x.
$t Title
Not used. For author/title subject headings, use field 604 NAME AND TITLE USED AS SUBJECT.
$j Form Subdivision
A term added to the subject heading to further specify the kind(s) or genre(s) of material (EX 2). Agencies not using this subdivision should use $x instead. Repeatable.
$x Topical Subdivision
A term added to a subject heading to further specify the topic the subject heading represents. Repeatable.
$y Geographical Subdivision
A term added to a subject heading to specify a place in relation to a family which the subject heading represents. Repeatable.
$z Chronological Subdivision
A term added to a subject heading to specify the period in time in relation to a family which the subject heading represents. Repeatable.
$2 System Code
An identification in coded form of the system from which the subject heading is derived. Not repeatable. It is recommended that subfield $2 always be present in each occurrence of the field.
$3 Authority Record Number
The control number for the authority record for the heading. This subfield is for use with UNIMARC/Authorities. Not repeatable.
Notes on Field Contents
This field is intended for recording headings for family names used as subjects. These headings are structured in the same form as name headings for a family responsible for the content of an item. Subfield $a includes the name of the family and any qualification such as ‘(Family)’ or ‘(Clan)’. Such qualifications should retain their punctuation in the subfield.
This field can contain more than the name of the family in subfield $a. In addition, terms may be added to the subject heading to further specify it with respect to form, topic, place or time. These follow the rules of the subject heading system used.
604 NAME AND TITLE USED AS SUBJECT
Field Definition
This field contains an author and title of a work which is one of the subjects of the item. The field is structured like the 4– Linking Entry fields, Embedded fields technique.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$1 (one) Linking data
(See explanation under 4– LINKING ENTRY BLOCK)
Notes on Field Contents
This field is used to record the name of a work used as a subject, when it is represented by a name/title heading. The title of the work is recorded in an embedded 500 Uniform Title field. The subject system code ($2), Authority Record Number ($3) and any subject subdivisions ($j, $x, $y, $z) needed should also be carried in the embedded 500 field. The name of the author is carried in an embedded 7– Intellectual Responsibility field.
605 TITLE USED AS SUBJECT
Field definition
This field contains a title which is one of the subjects of the item being recorded. This title may be the title of a work in any form of medium, e.g. stage plays, radio programmes, etc.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Entry Element
The short title or title proper. Not repeatable.
$h Number of Section or Part
The number of a part when the item to which the title or uniform title refers is only a part of the work named in subfield $a. Repeatable for a subdivided part.
$i Name of Section or Part
The name of a part when the item to which the title or uniform title refers is only a part of the work named in subfield $a (EX 3). Repeatable for a subdivided part. (EX 3)
$j Form Subdivision
The description of this subfield can be found above the description of $x.
$k Date of Publication
The date of publication of the item as subject when it is necessary to add it to the uniform title to distinguish the item. Not repeatable.
$l Form Subheading
A standard phrase added to a heading to further specify the uniform title. Not repeatable.
$m Language (when part of heading)
The language of the item when required as part of the heading because it differs from that usually associated with the work named in the heading or when the work does not have a main language. If the work is in more than one language, both languages should be entered in a single $m. Not repeatable.
$n Miscellaneous Information
Any information not provided for in any other subfield. This includes a general material designation added to a title (EX 4, 5). Repeatable.
$q Version (or Date of Version)
An identification of the version of the work represented by the item; this may be the original date of the version. Not repeatable. (EX 6)
$r Medium of Performance (for Music)
The instrumentation, etc., of the item. Repeatable.
$s Numeric Designation (for Music)
A number assigned by the composer or others to distinguish works. The number may be the serial, opus or thematic index number or date used as a number. Repeatable.
$u Key (for Music)
The musical key used as part of the uniform title. Not repeatable.
$w Arranged Statement (for Music)
The statement that a musical work is an arrangement. Not repeatable.
$j Form Subdivision
A term added to the subject heading to further specify the kind(s) or genre(s) of material (EX 3, 6, 7). Agencies not using this subdivision should use $x instead. Repeatable.
$x Topical Subdivision
A term added to the title to specify the aspect that the subject heading represents (EX 2, 3, 6, 7). Repeatable.
$y Geographical Subdivision
A term added to a title to specify a place in relation to it that the subject heading represents. Repeatable.
$z Chronological Subdivision
A term added to a title to specify the period in time in relation to it that the subject heading represents. Repeatable.
$2 System Code
An identification in coded form of the system from which the subject heading is derived. It is recommended that subfield $2 always be present in each occurrence of the field. For a list of system codes, see Appendix G. Not repeatable.
$3 Authority Record Number
The control number for the authority record for the heading. This subfield is for use with UNIMARC/Authorities. Not repeatable.
Notes on Field Contents
This field will normally contain a uniform title, since most other titles assigned as subjects will be treated using 604 NAME AND TITLE USED AS SUBJECT. Any anonymous work which is the subject of the item being recorded will be entered here. Further information and examples on the contents of subfields for uniform titles are found at field 500. A title proper which is to be entered in this field should be entered in subfield $a including in that subfield any other title information as necessary.
606 TOPICAL NAME USED AS SUBJECT
Field Definition
This field contains a common noun or noun phrase used as a subject heading.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: Level of the Subject Item
The first indicator is used to distinguish primary and secondary descriptors. A term is considered primary (value ‘1′) if it covers the main focus or subject of the material. A term covering a less important aspect is considered secondary (value ‘2′). Value ‘0′ is used when no decision has been made as to whether the term is primary or secondary.
0 No level specified
1 Primary term
2 Secondary term
# No information available
Indicator 2: blank (not defined)
Subfields
$a Entry Element
The term in the form prescribed by the system of subject headings used. Not repeatable.
$j Form Subdivision
A term added to the subject heading to further specify the kind(s) or genre(s) or material (EX 6, 7). Agencies not using this subdivision should use $x instead. Repeatable (EX 8).
$x Topical Subdivision
A term added to the topical heading to specify the aspect that the subject heading represents (EX 2, 3). Repeatable.
$y Geographical Subdivision
A term added to the topical heading to specify a place in relation to the topic that the subject heading represents (EX 2, 4). Repeatable.
$z Chronological Subdivision
A term added to the topical heading to specify the period of time in relation to the topic that the subject heading represents (EX 5). Repeatable.
$2 System Code
An identification in coded form of the system from which the subject heading is derived. It is recommended that subfield $2 always be present in each occurrence of the field. For a list of system codes, see Appendix G. Not repeatable.
$3 Authority Record Number
The control number for the authority record for the heading. This subfield is for use with UNIMARC/Authorities. Not repeatable.
Notes on Field Contents
This field contains data entered according to the provisions of the system of subject headings used.
607 GEOGRAPHICAL NAME USED AS SUBJECT
Field Definition
This field contains a geographical name used as a subject heading.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Entry Element
The geographical name in the form prescribed by the system of authority headings used. Not repeatable.
$j Form Subdivision
A term added to the subject heading to further specify the kind(s) or genre(s) of material (EX 5, 6). Agencies not using this subdivision should use $x instead. Repeatable.
$x Topical Subdivision
A term added to the geographical name to specify the aspect that the subject heading represents. Repeatable.
$y Geographical Subdivision
A term added to the geographical name to further specify a place that the subject heading represents (EX 5). Repeatable.
$z Chronological Subdivision
A term added to the geographical name to specify the period in time in relation to the name that the subject heading represents (EX 1, 2, 4). Repeatable.
$2 System Code
An identification in coded form of the system from which the subject heading is derived. It is recommended that subfield $2 always be present in each occurrence of the field. For a list of system codes, see Appendix G. Not repeatable.
$3 Authority Record Number
The control number for the authority record for the heading. This subfield is for use with UNIMARC/Authorities. Not repeatable.
Notes on Field Contents
This field will contain data entered according to the provisions of the system of subject headings used. Political jurisdictions represented by geographical names are entered in this field if they appear alone or subdivided only by subject subdivisions (EX 2, 4). Political jurisdictions subdivided by names of subordinate bodies are entered in field 601.
608 FORM, GENRE OR PHYSICAL CHARACTERISTICS HEADING
Field Definition
This field contains a term or terms indicating the form, genre and/or physical characteristics of the item being described.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Entry Element
The term in the form prescribed by the system of form headings used. Not repeatable.
$j Form Subdivision
A term added to the subject heading to further specify the kind(s) or genre(s) of material (EX 6). Agencies not using this subdivision should use $x instead. Repeatable.
$x Topical Subdivision
A term added to the form heading to specify the aspect that the heading represents. Repeatable.
$y Geographical Subdivision
A term added to the form heading to specify a place in relation to the topic that the heading represents. Repeatable.
$z Chronological Subdivision
A term added to the form heading to specify the period of time in relation to the topic that the heading represents. Repeatable.
$2 System Code
An identification in coded form of the system from which the form heading is derived. It is recommended that subfield 2 always be present in each occurrence of the field. Not repeatable.
$3 Authority Record Number
The control number for the authority record for the heading. This subfield is intended to be used with the UNIMARC Authorities Format. Not repeatable.
$5 Institution to which the Field Applies
Name of institution to which field applies in coded form. Since there are no internationally accepted codes, the codes from USMARC Code List for Organizations, which includes codes for many non-U.S. library agencies, are recommended. Otherwise, the full name of the agency or a national code may be used. If the institution holds more than one copy the subfield should also contain the shelfmark after a colon. Not repeatable.
Notes on Field Contents
This field contains data entered according to the provisions of the system of form headings used.
610 UNCONTROLLED SUBJECT TERMS
Field Definition
This field is used to record subject terms that are not derived from controlled subject heading lists.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: Level of the Subject Term
The first indicator is used to distinguish primary and secondary descriptors. A term is considered primary (value ‘1′) if it covers the main focus or subject of the material. A term covering a less important aspect is considered secondary (value ‘2′). Value ‘0′ is used when no decision is made as to whether the term is primary or secondary.
0 No level specified
1 Primary term
2 Secondary term
Indicator 2: blank (undefined)
Subfields
$a Subject Term
Repeatable when more than one term is assigned for the item.
Notes on Field Contents
Terms belonging to structured subject thesauri should be coded in fields 600607 with the appropriate $2 System Code.
620 PLACE ACCESS
Field Definition
This field contains an access point form of a place of publication, production, etc. The field may include the name of a country, state or province, county and/or city.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Country. Not repeatable.
$b State or Province etc. Not repeatable.
$c County. Not repeatable.
$d City. Not repeatable.
$3 Authority Record Number
The control number for the authority record for the heading. This subfield is for use with UNIMARC/Authorities (EX 1). Not repeatable.
Notes on Field Contents
The content of this field may be in hierarchical form, e.g. country, state, and city; or it may be in non-hierarchical form, e.g. city alone, depending on institutional practice.
626 TECHNICAL DETAILS ACCESS (ELECTRONIC RESOURCES)
(OBSOLETE)
OBSOLETE: USE 337 WITH CONTROLLED VOCABULARY
Field Definition
This field contains access points for types of computers, operating systems, and programming languages used for electronic resources. The access points may be used for on-line access or for selecting and arranging records for the production of printed indexes.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Make and Model of Machines
The type of machines on which the program will run. Not repeatable.
$b Programming Languages
The programming languages in which the software is written. Not repeatable.
$c Operating System
The name and version of the operating system needed to use the program. Not repeatable.
Examples
EX1
626 ##$aIBM PC$bPascal$cDOS 1.1
An access point for a microcomputer software program intended to run on an IBM PC under DOS operating system version 1.1; it was written in the Pascal programming language.
EX2
626 ##$aApple II$cDOS 3.3
An access point for a microcomputer software program intended to run on an Apple II computer under DOS operating system version 3.3.
660 GEOGRAPHIC AREA CODE
Field Definition
This field contains an indication of the region covered by the work, in coded form, according to the Library of Congress geographic area codes.
Occurrence
Optional. Repeatable for each region indicated.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfield
$a Code
Geographic area code. Not repeatable. For codes see Appendix D.
Notes on Field Contents
The geographic area code was developed by the Library of Congress to facilitate retrieval of records by a geographic approach. The geographic area code is applied to an item when its text has a geographic orientation.
The coding scheme contains seven lower case alphabetic characters and/or hyphens and, as far as possible, provides a hierarchical breakdown of geographical and political entities.
When more than one geographic area code is assigned, each is entered in a separate field.
661 TIME PERIOD CODE
Field Definition
An indication of the date covered by the work, coded according to the Time Period Code (formerly called the Chronological Coverage Code).
Occurrence
Repeatable for each period covered when an item deals with a number of distinct periods (EX 1).
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Time Period Code
It consists of four alphanumeric characters. Not repeatable.
Notes on Field Contents
In the absence of an international coding scheme for time period codes, the scheme used in the USMARC format (details in Appendix E) should be used. The code is not used for prehistoric dates, e.g. geological eras.
670 PRECIS
Field Definition
This field is used to contain subject indexing data constructed according to the Preserved Context Index System (PRECIS).
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$b Subject Indicator Number
The Subject Indicator Number (SIN) is a fixed-length number ending in a modulus 11 check digit. It identifies uniquely the address of the subject packet on a machine readable file. Not repeatable.
$c String
The string is a sequence of subject index terms in which each term is preceded by a code which determines how it should appear in entries generated by the computer in printed indexes, COM output, card catalogues, etc. Not repeatable.
$e Reference Indicator Number
A Reference Indication Number (RIN) is a fixed-length number ending in a modulus 11 check digit which identifies the address of a term in the machine-held thesaurus used as the source of See and See also references in a printed index. Repeatable.
$z Language of Terms
A three character language code giving the language of the terms used in the string. For codes see Appendix A. Not repeatable.
Notes on Field Contents
The set of PRECIS data consisting of string and RINs is identified by the SIN and is termed a subject packet. The use of the data to generate printed index entries is dependent on specific software capable of handling the manipulation coding in accordance with a set of definite rules.
675 UNIVERSAL DECIMAL CLASSIFICATION (UDC)
Field Definition
This field contains a class number applied to the item according to the Universal Decimal Classification scheme, with an indication of the edition being used.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Number
The class number as taken from the UDC schedules. Not repeatable.
$v Edition
The number of the edition from which the number in subfield $a is taken. Not repeatable.
$z Language of edition
The language in coded form of the edition from which the number in subfield $a is taken. For codes see Appendix A. Not repeatable.
Notes on Field Contents
The number is taken from the UDC schedules used by the agency preparing the record. UDC is produced in various language versions each of which is revised from time to time and published as a new edition. Each published edition of UDC is authorized by the International Federation for Documentation (FID) and is available from national standards organizations, or, in countries where there is no national organization, from the International Organization for Standardization (ISO).
676 DEWEY DECIMAL CLASSIFICATION
Field Definition
This field contains a class number applied to the item being recorded according to the Dewey Decimal Classification.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Number
The number as taken from the Dewey Decimal Classification schedules. Prime marks are indicated by /. Not repeatable.
$v Edition
The number of the edition used (EX 1-7). An ‘a’ is added to the number to indicate abridged edition (EX 6). Not repeatable.
$z Language of edition
The language in coded form of the edition from which the number in subfield $a is taken (EX 7). For codes see Appendix A. Not repeatable.
Notes on Field Contents
The number is entered in subfield $a in the form prescribed by the schedules used by the agency preparing the record. The number may include prime marks (/), which indicate internationally agreed points at which the number may be truncated. The number should not include extensions used solely to assign a bookmark to an individual item.
Subfield $z should be used only if the translated version contains differences from the original, e.g. when parts of the schedule have been rewritten to cover local requirements.
680 LIBRARY OF CONGRESS CLASSIFICATION
Field Definition
This field contains a class number applied to the item according to the Library of Congress classification schedules, with the optional addition of a book number applied to an individual book to identify it uniquely in the cataloguing agency’s collections.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Class number
The class number taken from the Library of Congress classification schedules. Not repeatable.
$b Book number
The individual book number applied by the cataloguing agency. Not repeatable.
Notes on Field Contents
A Library of Congress class number may be applied by any agency in possession of the Library of Congress Classification Schedules.
686 OTHER CLASS NUMBERS
Field Definition
This field contains class numbers from classification systems which are not internationally used but which are widely understood, published schemes.
Occurrence
Optional. Repeatable.
Indicators
Indicator 1: blank (not defined)
Indicator 2: blank (not defined)
Subfields
$a Class number
The class number taken from the classification scheme. Repeatable.
$b Book Number
The book number applied by the assigning agency. Repeatable.
$c Classification Subdivision
A subdivision of the class number taken from the classification scheme. Repeatable.
$2 System Code
A code for the classification scheme used in formulating the number. For a list of system codes, see Appendix G. Not repeatable.
Filed under: 6, Subject headings, UNIMARC, Uncategorized | Tagged: 6, Blocks, Fields, Subfields, UNIMARC
