MARC Standards / Library of Congress, Network Development and MARC Standards Office http://www.loc.gov/marc/
MARC 21 Concise Format for Bibliographic Data http://www.loc.gov/marc/bibliographic/Bibliographic Lite: http://www.loc.gov/marc/bibliographic/lite/
Fixed field codes, tags, indicators, variable field codes, and subfield codes.
MARC 21 character set http://www.loc.gov/marc/specifications/specchartables.htmlThe MARC format specifies a repertoire of characters encoded in MARC (including over 16,000 characters covering Latin, extended Latin, Arabic, Cyrillic, Greek, Hebrew, Chinese, Japanese, and Korean). It indicates two encodings for the repertoire in 8-bit/24-bit and an alternative encoding in Unicode (UTF-8 form). Those are the current and official repertoire and encodings that support exchange of information from and to many countries and environments.
http://lcweb.loc.gov/marc/yr2000.htmlThis document indicates data elements in the MARC formats that contain dates that could be affected by the century change in the year 2000.
http://www.loc.gov/marc/tn001102.htmlAs of 2001, the Library of Congress Control Number (
LCCN) will contain a 2-character alpha prefix, a 4-digit year, and a 6-digit serial portion. Also, LC has newly defined MARC characters. [See LC usage of new MARC 21 characters http://lcweb.loc.gov/catdir/cpso/newchar.html]