AACR2 (Anglo-American Cataloguing Rules, Second Edition)

AACR2, or the Anglo-American Cataloguing Rules, Second Edition, is a set of guidelines used in libraries to organize and describe books and other materials. Developed to standardize how items are cataloged, it helps librarians create consistent entries that include important information like title, author, and publication date. By following AACR2, libraries ensure that patrons can easily find and access resources. Although now largely succeeded by RDA (Resource Description and Access), AACR2 laid the groundwork for modern cataloging practices, promoting clarity and usability in library systems.