Kumar, P.S.G. Information sources and services: theory & practice / P.S.G. Kumar. - Delhi : B. R. Publishing, 2004. - 390 p. - Kumar's curriculum series in library and information science. 6 . ISBN: 81-7646-405-8 Rs. 1000.00 Standard No.: 8947 [old SOUL v1.0 record id] Subjects--Topical Terms: Library science Dewey Class. No.: 020 / K96l