Sharma, Jagdish Saran. Reference service and sources of information / by Jagdish Saran Sharma,D.R.Grover. - 1st ed / - New Delhi : Ess Ess Publications , 1987 - viii,288p ; ISBN: 81-7000-022-X Subjects--Topical Terms: Reference Sevice Dewey Class. No.: 2:12 / M7;4