DDC 21 Dewey Decimal Classification 9 DDC- Relative index 3 Classification-DDC 2 Colon Classification-- DDC-- AACR-- CCC-- Sears List 2 DDC-Classification 2 DDC: Manual & Tables 2 DDC: Schedules 000-599 2 DDC: Schedules 600-999 2 DDc 2 Deway decimal Classification 2 Dynamic theory-library classification 2 Library and information science 2 Library classification-DDC 2 Relative Index 2 AACR 1 CCC 1 Cataloging 1 Classification 1 Classification, Dewey decimal 1 Classification- DDC-Abridged 1 Classification- Dewey Decimal 1 Classification-Dewey Decimal 1 Classification-Library and information science 1 Colon Classification 1 DDC Classification 1 DDC Classification Schedule 1 DDC Tables 1 DDC and online cateloguing 1 DDC in web database 1