Ranganathan, S. R. Colon classification / S.R. Ranganathan ; revised and edited by M. A. Gopinath. - Bangalore : Sarada Ranganathan Endowment for Library Science, 1987. - v. ; ISBN: SSCF738 Subjects--Topical Terms: Classification, Colon Dewey Class. No.: 025.435 / Co,7