MARC 21 Format for Bibliographic Data
National Level Full and Minimal Requirements
Leader & Directory
1999 Edition
Update No. 1 (October 2001) through Update No. 8 (October 2007)
National Minimal
Level Level
LEADER M M
00-04 Record length M M
05 Record status M M
06 Type of record M M
07 Bibliographic level M M
08 Type of control M M
09 Character Coding Scheme M M
10 Indicator count M M
11 Subfield code count M M
12-16 Base address of data M M
17 Encoding level M M
18 Descriptive cataloging form M M
19 Multipart resource record level M M
20 Length of the length-of-field portion M M
21 Length of the starting-character- M M
position portion
22 Length of the implementation-defined M M
portion
23 Undefined M M
DIRECTORY M M
00-02 Tag M M
03-06 Field length M M
07-11 Starting character position M M