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

 - Delhi  Vikas Publishing House  1974 
 - 327p. 
<br/><br/><label>ISBN: </label>0706903021 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Reference Service
<br/><br/><label>Dewey Class. No.: </label>025.52  / S94C