Dewey Decimal classification, 22nd edition

the long version

"Updated to cover the changes introduced by the latest edition of the DDC, the 22nd edition of this trusted guide is an essential purchase for technical services departments in all libraries. Mona L. Scott provides an in-depth review of how DDC is updated and gives detailed lists of changes in each table and class. It is an invaluable study manual and reference source for the application of Dewey, as well as a comprehensive course text for students."--Jacket.