Kelkar, S.A. Information systems : a concise study / S.A. Kelkar - New Delhi : PHI Learning, 2009 - xi, 935 p. ; 24 cm. ISBN: 9788120336513 (pbk.) Rs. 495.00 Subjects--Topical Terms: Information storage and retrieval systemsInformation SystemElectronic data processing Dewey Class. No.: 658.05