Ali, Amjad  <br/><br/>
Reference service and the digital sources of information 
/ Amjad Ali 
 - New Delhi :  Ess Ess Publications,    2004 
 - 392 p. :  25 cm. 
<br/><br/><label>ISBN: </label>8170004128 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Information retrieval<br/>Information services
<br/><br/><label>Dewey Class. No.: </label>025.52 ALI