00370nam a22001217a 4500008004100000020001800041100002400059245006800083260002800151300002000179650002500199650002400224151006t        xxu||||| |||| 00| 0 eng d  a9789350564288  aSingh, Pankaj Kumar  aLibrary information services and systemscby Pankaj Kumar Singh  aNew Delhi:bDPH,c2014.  a[viii], 304p. :  aInformation services  aInformation science