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Record structure

Find the basic structure for the leader, the directory, and the control and variable fields in OCLC-MARC bibliographic and authority records.
  • About record structure
    Find an overview of the record structure, including content designation and repeatability, of OCLC MARC records.
  • General structure
    Find an overview of the general structure, including control fields and variable fields, of OCLC MARC records.
  • Leader
    Find the structure, elements, and entry map structure for the leader field in OCLC MARC records.
  • Directory
    Find the structure and elements for the record directory in OCLC MARC records.
  • Control and variable fields
    Find the control fields, variable fields, and variable field components for OCLC MARC records.