"Kumar , Suseela" <br/><br/>
Changing concepts of reference service 

 - Delhi  Vikas Pub.  1974 
 - 327p 
<br/><br/><label>ISBN: </label>706903021 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference & Information Services
<br/><br/><label>Dewey Class. No.: </label>025.52 Sus