Universal Decimal Classification

Dewey decimal classification and relative index Dewey, Melvil Dewey decimal classification and relative index Dewey, Melvil Dewey decimal classification Mahmud ul-Hassan Dewey decimal classification and relative index Dewey, Melvil A modern outline of library classification Mills, J. Library cataloguing and classification systems edited by M. S. Ramalingam Dewey decimal classification, 19th edition Osborn, Jeanne Classified Library of Congress subject headings Williams, James G.