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654  Subject Added Entry–Faceted Topical Terms (R)


Input Standards

1st Indicator  Level of subject
blank character  No information provided
No level specified
1 Primary
2 Secondary
2nd Indicator  Undefined
blank character  Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards 
‡a Focus term (R) Required if applicable/Required if applicable
‡b Non-focus term (R) Required if applicable/Required if applicable
‡c Facet/hierarchy designation (R) Mandatory/Mandatory
‡e Relator term (R) Optional/Optional
‡v Form subdivision (R) Required if applicable/Required if applicable
‡y Chronological subdivision (R) Required if applicable/Required if applicable
‡z Geographical subdivision (R) Required if applicable/Required if applicable
‡0 Authority record control number (R) Optional/Optional
‡2 Source of heading or term (NR) Mandatory/Mandatory
‡3 Materials specified (NR) Optional/Optional
‡4 Relator code (R) Optional/Optional


A topical subject constructed from a faceted vocabulary (e.g., the Art and Architecture Thesaurus [AAT]).

1st Indicator

Level of subject. The level of the subject entry. Use the 1st indicator to distinguish primary and secondary descriptors.
blank character No information provided. No information as to the level of the subject term is provided.
654     ‡c r ‡a country houses ‡c z ‡b Great Britain ‡c y ‡b 18th century. ‡2 aat
[Heading: country houses-Great Britain-18th century] 
No level specified. The level of the subject term could be determined, but is not specified.
654   ‡c r ‡a landscape gardens ‡c y ‡b18th century ‡c z ‡b England. ‡2 aat
[Heading: landscape gardens-18th century-England] 
1 Primary. A subject covers the main focus or subject content of the material.
654 1   ‡c k ‡a interior design. ‡2 aat
[Heading: interior design] 
2 Secondary. A subject covers a less important aspect of the content of the material.
654 2   ‡c r ‡a housing. ‡2 aat
[Heading: housing] 

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank ( blank character ).
blank character Undefined 


‡a Focus term   A term which is considered the focus term. A focus term is the activity, being, concrete thing or idea forming the basis of the index entry. Repeat subfield ‡a when there is more than one expression in the field.
654     ‡c f ‡b Romanesque ‡c m ‡b stone ‡c r ‡a churches ‡c k ‡a renovation. ‡2 aat
[Heading: Romanesque stone churches-renovation] 
‡b Non-focus term   A term other than the focus term.
654     ‡c m ‡b charcoal ‡c v ‡a drawings ‡c z ‡b Great Britain ‡c y ‡b 18th century. ‡2 aat
[Heading: charcoal drawings-Great Britain-18th century] 
‡c Facet/hierarchy designation   A designation identifying the facet/hierarchy designation for each term found in subfields ‡a and ‡b. The designations and their associated facets/hierarchies are found in the thesaurus identified in subfield ‡2. Data in subfield ‡c always precedes the data to which it is associated.
654     ‡c d ‡b blue ‡c f ‡b Baroque ‡c t ‡a pitchers. ‡2 aat
[Heading: blue Baroque pitchers] 
‡e Relator term   Contains the term that indicates the relationship between the faceted topical term used as a subject added entry and the described materials. See the MARC Code Lists for Relators, Sources, Descriptive Conventions (
‡v Form subdivision   A specific kind or genre of material defined by the thesaurus being used. Use only when a form subject subdivision is added to a faceted topical term. Use subfield ‡v also for form terms when they function as indicated above. Use subfield ‡x if the terms function as general subdivisions. A form subdivision in subfield ‡v is generally the last subfield in the field. Repeat subfield ‡v if you use more than one form subdivision.
‡y Chronological subdivision   A subject subdivision that represents a period of time. Use only when a chronological subject subdivision is added to a main term.
654   ‡c r ‡a landscape ‡y 18th century ‡z England. ‡2 aat
[Heading: landscape-18th century-England] 
‡z Geographical subdivision   A geographic subject subdivision. Use only when a geographic subject subdivision is added to a main term.
654     ‡c v ‡a drawings ‡c z ‡b Great Britain. ‡2 aat
[Heading: drawings-Great Britain] 
‡0 Authority record control number   Subfield ‡0 (zero) contains the system control number of the related authority record or a standard identifier such as an International Standard Name Identifier (ISNI). The control number or identifier is preceded by the appropriate MARC Organization code (for a related authority record) or the Standard Identifier source code (for a standard identifier scheme), enclosed in parentheses. See MARC Code List for Organizations ( for a listing of organization codes and Standard Identifier Source Codes ( for code systems for standard identifiers. Subfield ‡0 is repeatable for different control numbers or identifiers.

Do not input subfield ‡0 in master records, instead use the control headings function. Local authority identifiers may be entered in subfield ‡0 locally, but should not be added to master records in WorldCat.

‡2 Source of heading or term   A MARC code that identifies the source list from which the heading in a subject added entry was assigned. See Subject Heading and Term Source Codes

654     ‡c v ‡a bibliographies. ‡2 aat
[Heading: bibliographies] 
‡3 Materials specified   The part of the described materials to which the field applies.
654     ‡3 business letters ‡c r ‡a housing ‡c z ‡b United States. ‡2 aat
[Heading: business letters: housing-United States] 
‡4 Relator code   Contains the MARC code that indicates the relationship of the entry to the item. See the MARC Code Lists for Relators (


Field 654 does not print.

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