| MARC 21 FormatsMARC Format Overview -- Edition               and Update Information               Ordering Documentation: Print | CD-ROM**MARC Format Documentation**            - Bibliographic            - Bibliographic (LITE)            - Authority            - Holdings            - Classification            - Community Information**MARC Code Lists**            - Countries            - GACs            - Languages            - Organizations            - Relators            - Sources**MARC             Field Lists**            - Bibliographic            - Authority            - Holdings            - Classification            - Community Information**MARC Concise Formats (2012 Edition) available to download as PDF**            - Table of Contents [PDF, 24 KB]              - General Introduction [PDF, 27 KB]            - Bibliographic [PDF, 765 KB]             - Authority [PDF, 387 KB]             - Holdings [PDF, 231 KB]             - 2012 Changes [PDF, 15 KB]
**Specifications             for Record Structure, Character Sets, and Exchange Media****MARC 21 Translations****Tutorial: Understanding MARC Bibliographic****Tutorial: Understanding MARC Authority  Records****Tutorial: Understanding MARC Holdings Records**

**MARC Mappings**              - MARC               21 to MODS              - MODS               to MARC 21              - Dublin Core to MARC 21              - MARC 21 to Dublin Core              - Digital               Geospatial Metadata to MARC               - GILS               - MARC               to Digital Geospatial Metadata               - MARC               Character Sets to UCS/Unicode              - ONIX to MARC               21              - UNIMARC             to MARC 21          - PREMIS          - MIX          - TextMD
**U.S. National Level Requirements** - MARC               21 Authority - MARC               21 BibliographicMARC Notebook*Content Related Notes*- Ambiguous                 Headings  Analyses of Data Overlaps Between MARC21 Bibliographic Format and PREMIS, MIX, and TextMD              Initial Definite and Indefinite                 Articles
- Record Examples:                   - Authority
  - Bibliographic 
  - Community                     Information
  - Classification
  - Holdings  Structure of the Library of Congress                 Control Number (LCCN) *Electronic Resource Notes*-  Guidelines                 for Coding Electronic Resources in Leader/06  (revised December 2007)   Guidelines for Distinguishing Cartographic                 Materials on Computer File Carriers from other Materials on Computer                 File Carriers Field 856 (Electronic Location and                 Access) Guidelines
 (revised March 2003)
-  Naming Conventions for Digital Resources     Format Related Notes     - Guidelines                 for the Non-Sorting Control Character Technique  MARC 21 Formats:                 Background and PrinciplesAuthority                 Format Data Coding Interdependencies
- Chronology and Enumeration Types                 with Code Patterns  (revised Oct. 2002)               MARC 21 Coded Data: Relationship                 of Fields 006, 007, and 008 *Record Interchange Notes*- Electronic File Transfer specifications   RFC2220 on Internet                 Media Type for MARC 
**Go to**: MARC Standards**Library of Congress**Legal | External Link Disclaimer      (      05/23/2023      ) |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|