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Cataloger's Desktop
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Classification Web
Library of Congress Classification and Subject Headings on the Web.

What is FRBR?: A Conceptual Model for the Bibliographic Universe
Now available for purchase or free PDF download.

MARC Documentation
MARC formats
MARC code lists
"Understanding MARC" publications

Databases and MARC Distribution Services
LC's MARC files via FTP

Classification
LC Classification Schedules, A-Z
LC Classification Poster and Pocket Guide
Classification manuals and tools
Classification Web

Subject Headings
Library of Congress Subject Headings
Subject Cataloging Manuals

Name Headings
LC name and series authority records
NACO Participants' Manual

Cataloging Manuals
Library of Congress Rule Interpretations
CONSER documentation
Manuals for cataloging special formats

Training Tools
Descriptive cataloging
Serials cataloging
Subject cataloging

Alert Service
Weekly currrent awareness service

Catalogs and Union Lists in Microfiche