1xx

The 1XX fields in MARC21 records primarily contain information about the main entry, which typically represents the primary creator or contributor of the bibliographic resource. Here's a breakdown of the 1XX fields with subfields commonly used along with an example:

1. 100 - Main Entry-Personal Name:
   • Indicators: Indicator 1 specifies whether the personal name is established in the Library of Congress Name Authority File (value "0") or not established (value "1").
   • Subfield $a: Personal name (Example: Rowling, J.K.)
   • Subfield $b: Numeration (Example: III)
   • Subfield $c: Titles and other words associated with a name (Example: Sir)
2. 110 - Main Entry-Corporate Name:
   • Indicators: Indicator 1 specifies whether the corporate name is established in the Library of Congress Name Authority File (value "0") or not established (value "1").
   • Subfield $a: Corporate name (Example: Library of Congress)
   • Subfield $b: Subordinate unit (Example: Cataloging Policy and Support Office)
3. 111 - Main Entry-Meeting Name:
   • Indicators: Indicator 1 specifies whether the meeting name is established in the Library of Congress Name Authority File (value "0") or not established (value "1").
   • Subfield $a: Meeting name (Example: International Conference on Machine Learning)
   • Subfield $n: Numbering (Example: 28th)
   • Subfield $d: Date of meeting (Example: 2021)
   • Subfield $c: Location of meeting (Example: New York, N.Y.)
4. 130 - Main Entry-Uniform Title:
   • Indicators: Indicator 1 specifies whether the uniform title is established in the Library of Congress Name Authority File (value "0") or not established (value "1").
   • Subfield $a: Uniform title (Example: Bible. New Testament. Greek)