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- General Introduction
- Relator Codes -- Introduction
- Category Code Sources -- Fields 072 (Authority/Bibliographic/Community);
073 (Authority/Community)
- Classification Sources -- Fields 052, 055, 084,
086, 852 (Bibliographic), 052, 065, 086, 087 (Authority), 084 (Classification),
052 (Community), 852, 856 (Holdings)
- Term, Name, Title Sources -- Fields 040, 700-788
(Authority), 600-658 (Bibliographic/Community), 700-754 (Classification)
- Format Sources -- Fields 886-887 (Bibliographic)
- Description Conventions -- Field 040 (Authority/Bibliographic)
- Other Sources -- Fields 042, 043, 856 (Authority);
015, 017, 024, 042, 043, 044, 210, 524, 583, 754, 856 (Bibliographic); 856
(Classification); Fields 043, 856 (Community Information); 043, 024, 583 (Holdings)
This document contains several lists of codes intended for use in MARC 21 Authority,
Bibliographic, Classification, Community Information, and Holdings records. The
lists contain over 500 discrete codes, several of which are obsolete. Some codes
appear on more than one list. The document is arranged for use in seven main parts;
a brief description of these parts follows.
- Relator Codes.
- Part I contains a list of relator terms and their associated codes. The
purpose of this list is to allow the relationship between a name and a work
to be designated by codes in the MARC record.
- Category Code Sources.
- Part II contains a list of works that are sources of codes which categorize
a bibliographic item.
- Classification Sources.
- Part III contains a list of sources of classification schemes for government
documents and a other types of publications.
- Term, Name, Title Sources.
- Part IV contains a list of works that are sources of terms, names, and titles
used as headings or for indexing of authors, subjects, etc.
- Format Sources.
- Part V contains a list of works that are sources of machine-readable cataloging
formats.
- Description Convention Codes.
- Part VI contains a list of codes assigned to sources of conventions (that
is, rules, manuals, guidelines, policies, etc.) that are used in the description
of bibliographic items. The codes in this list are used to identify the description
conventions applied in a MARC record as a whole, or to specific MARC elements
(e.g., particular fields).
- Other Sources.
- Part VII contains various lists of codes assigned to be used to identify
sources of data in MARC fields or to characterize the data in the MARC field.
The codes are recorded in subfield $2 of the MARC variable field to which
they apply. The code lists grouped here do not fit into any of the existing
groupings of codes in Parts I-VI.
This Web document includes all MARC relator and source codes that have been
assigned by the Library of Congress as the result of an official request. For
newly assigned codes only, a date is given before which the code should not
be included in exchange records. The date represents a 60-day waiting period
which is required to allow MARC implementers time to add newly assigned codes
to any validation tables they may use to check the codes recorded in certain
MARC data elements. MARC implementers may use newly assigned codes in their
internally systems immediately as long as records containing new codes are not
distributed until after the waiting period.
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Structure of the Codes
Information about the structure of the codes for a particular list is presented
at the beginning of the corresponding part. The MARC codes listed in this publication
use only lower case alphabetic characters, and in some cases, numeric characters
0 through 9. No code exceeds the maximum of eight characters in length. Some
codes are limited to less than eight characters (for example, relator codes
are always three characters).
Code Maintenance
The Library of Congress is the maintenance agency for the lists in this document.
Requests for the assignment of new codes and questions about existing code assignments
should be sent to the: Network Development and MARC Standards Office, Library
of Congress, 101 Independence Avenue, S.E., Washington, DC 20540-4402; Fax:
+1-202-707-0115; Email: ndmso@loc.gov. Requests
for the assignment of a new code should include a description of the term (for
relator codes) or a full bibliographic citation of the source (for codes assigned
to classification schemes, name/terms sources, description conventions, etc.).
If available, a photocopy of the title page for a printed source should be faxed
along with the request. If a source to which a code is being assigned is only
available online, the URL for the source can be used in place of a photocopy
of title page.
Notices announcing additions or changes to assigned codes and their related
citations are made public prior to the date they should be used in records in
MARC News and Announcements at www.loc.gov/marc/.
Go to: MARC
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