00626nam a22002057a 4500 20130618121447.0 ENG-107363 9788120346390 525.00 EN-90896 DBAD/PUB 020 Gurdev Singh Information sources, services and systems / by Gurdev Singh New Delhi PHI Learning 2013 Rimjhim House, 111, Patparganj Industrial Estate Delhi 110092 xviii,517p. 24cm(pbk) Includes bibliographical references and index ddc EN GUR 020 76314 76314 0 0 0 1 NFIC DBAD DBAD 2013-05-29 DBAD/PUB 525.00 0 020 GUR EN-90896 2013-05-29 00:00:00 1 525.00 EN