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

 - Delhi, India  Vikas Publishing House Pvt. Ltd.  1974 
 - 327p 
 - Sarada Ranganathan endowment for library science series .
<br/><br/><label>ISBN: </label>0-7069-0302-1 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library services