This practical guidebook, now in its fourth edition, has been fully revised and is now in concordance with AACR2, 2002 Revision 2004 Update. Michael Gorman, co-editor of the original AACR2, explains the more generally applicable AACR2 rules for cataloging library materials in simplified terms that make the rules more accessible and practical for practitioners and students who are in less complex library and bibliographic environments.