Siddiqui, Tanveer. Natural language processing and information retrieval / by Tanveer Siddiqui and U.S. Tiwary - - New Delhi : Oxford University Press , 2008 - ix, 406p. : ills. ; 26cm . Includes index and appendix. ISBN: 9780195692327: Rs.525.00 Subjects--Topical Terms: NATURAL LANGUAGE PROCESSINGINFORMATION RETRIEVAL Dewey Class. No.: 006.35 / SID/N