This document provides an overview of bibliographic formats and MARC21 metadata standards. It discusses the purpose of library catalog records in facilitating user tasks like finding, identifying, selecting, and accessing information objects. The anatomy of a MARC21 record is described, including descriptive elements, labels, and how the record fits into systems with authority control, subject headings, and classification schemes. Common MARC21 fields are listed along with examples of how data appears at both the machine and human readable levels. The document also compares how different metadata standards like MARC21 and Dublin Core use common data elements to encode bibliographic descriptions within their defined structures and containers.
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