Colon classification 20 Classification 4 COLON CLASSIFICATION 3 Colon Classification 3 Colon Classification-- DDC-- AACR-- CCC-- Sears List 2 Library science 2 AACR 1 Books 1 CCC 1 Colon classification- Library science 1 DDC 1 Decimal Universal Decimal & Colon Classification:A Study In Comparison 1 Influence 1 Library Science 1 Library and information science 1 Library classification 1 Library classification schemes- Colon classification 1 Study 1