TY - BOOK AU - DRTC TI - DRTC annual seminar on 9 : abstracting, indexing, and revieuring periodicals pattern of use of documents by specialists comparative study of schemes for library classification pt . 1 : paper PY - 1971/// CY - Bangalore PB - DRTC KW - DRTC,annual,seminar,9,abstracting,,indexing,,revieuring,periodicals,documents,specialists,comparative,schemes,classification,pt,1,paper N1 - DRTC ER -