The Library of Congress Network Development and MARC Standards Office is pleased to announce that the Full versions of all five MARC 21 formats are now available online at www.loc.gov/marc/, along with the Online Concise.
The "full" version of a format contains detailed descriptions of every data element, along with examples, input conventions, and history sections--all of the information from the printed formats. There are no textual differences between the Online Full and the printed documentation. The Concise still contains all of the elements and enough description to serve many lookup needs. Changes from the most recent update of the formats are indicated in the text of both the Online Concise and the Online Full.
Comments concerning the usability of these web documents or suggestions for improved usability are welcome at ndmso@loc.gov.
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