Kumar, Suseela <br/><br/>
The changing concepts of reference service / 
Suseela Kumar 
 - 1st ed. 
 - Delhi :  Vikas Publishing House Pvt Ltd.,  1974. 
 - 1974p.:  ill.;  23 cm. 
<br/><br/>included index 
<br/><br/><label>ISBN: </label>0706903021 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science<br/>Reference materials
<br/><br/><label>Dewey Class. No.: </label>020  / KUM 2