Is there a complete listing of all of the Dewey Decimal system online? Find out from this IPL Frequently Asked Question site.

“The Library of Congress Authorities and Vocabularies service enables both humans and machines to programmatically access authority data at the Library of Congress via URIs.”

Provides brief instruction on how to construct a Cutter number for literary authors.

This is the official website for the ISSN and provides a wealth of information on ISSNs and related topics. The site is available in French as well as English.

Essential information for those developing in the Microsoft environment, using Microsoft tools, products, and technologies. Includes documentation, tutorials, and sample code, and reference materials.

Helpful information for any researcher using a system that employs the Library of Congress subject headings. Explains the principles of uniform heading, scope-match level of coverage, and specific entry.

Provides a list of standard subject headings used to categorize books by many in the publishing and retail industry.

Explains what a MARC Record is and how to use the MARC 21 standard to catalog resources.

“Bibliographic Formats and Standards is a guide to machine-readable cataloging records in WorldCat. It provides tagging conventions, input standards and guidelines for entering information into WorldCat.”

Explains, in detail, both the full and concise versions of the MARC 21 Format for Bibliographic Data. Provides guidelines for entering data into MARC records.

Complies a list of useful links, tools, and resources for catalogers covering a wide variety of topics, from MARC to cataloging blogs.

A tool that returns Dewey Decimal Classification “captions” (subject headings) and class numbers for keyword searches. Meant to help users access library collections in a novel way.

Provides a table that compares the Library of Congress Classification (LCC) scheme to the Dewey Decimal Classification (DDC) scheme.

Presents a concise explanation of the Dewey Decimal Classification (DDC) system. Includes enumeration of the top three level of “summaries,” the class, division, and section levels.

Presents an enumeration of the classes and main titles of the Library of Congress Classification system.

An interactive website providing a tool to browse and search Library of Congress Subject Headings.

This one-stop free cataloging tool allows users to search for AACR2 abbreviations, Geographic Cutters, Geographic Area codes, LC Cutters, Country codes, Language codes, and MARC variable fields all from one simple page. School libraries and other small libraries who can’t afford to subscribe to such tools as the Catalogers Desktop should find this …

A great tool for catalogers, the CRS contains free access to reference materials based on the official Library of Congress publications on USMARC Formats , USMARC Code Lists , Subject Cataloging Manuals and Other Reference Manuals, including CONSER, Classification, Rare Books, Looseleaf, Archival, Maps, NACO, etc.

Tips for cataloging Internet resources using AACR2 rules. Second edition.

Library of Congress list of cataloging resources, including conference reports and electronic journals.