The MARC 21 Format for Classification Data should be used with the following standards and related documentation.  When a standard is applicable to data in specific fields of the format, the fields are given in brackets following the citation.

Classification Schemes:

Class FC: A Classification for Canadian History.  Ottawa: Library and Archives Canada

Class PS8000:  A Classification for Canadian Literature.  Ottawa: Library and Archives Canada

Dewey, Melvil.  Abridged Dewey Decimal Classification and Relative Index.  Albany: Forest Press

Dewey, Melvil.  Dewey Decimal Classification and Relative Index.  Albany: Forest Press

DC&: Dewey Decimal Classification Additions, Notes and Decisions.  Albany: Forest Press

Library of Congress Classification

LC Classification - Additions and Changes

National Library of Medicine.  National Library of Medicine Classification.  Washington: for sale by the Supt. of Docs., U.S.G.P.O.

Universal Decimal Classification.  London: British Standards Institution  [also published in other languages and various editions]

National and International Standards:

ISO publications may be obtained from the International Organization for Standardization (ISO) ( and its agents; and ANSI/NISO Z39 publications may be obtained from the National Information Standards Organization (NISO) (

Format for Information Exchange (ISO 2709) and Bibliographic Information Interchange (ANSI Z39.2)

Representation of Dates and Times (ISO 8601)

MARC Standards and Other Related Publications:

These publications are available from the Library of Congress, Cataloging Distribution Service, Washington, DC 20541, USA (Worldwide distribution) and Canadian Government Publishing - PWGSC, Ottawa, Ontario K1A 0S9, Canada (Canadian distribution).  Where indicated these publications are available on the Internet.

Classification and Shelflisting Manual

MARC 21 Specifications for Record Structure, Character Sets, and Exchange Media

MARC Code List for Languages

MARC Code List for Organizations  (earlier title:  Symbols of American Libraries)

MARC Code List for Relators

Source Codes for Vocabularies, Rules, and Schemes

Value Lists for Codes and Controlled Vocabularies

Symbols and Interlibrary Loan Policies in Canada  (

MARC 21 Concise Formats (all five formats in concise form)  (

MARC 21 LITE Bibliographic Format  (

MARC 21 Format for Authority Data

MARC 21 Format for Bibliographic Data

Subject Headings Manual

See also:

Classification Data Format:  Introduction