"Singh, Ajay Kumar" <br/><br/>
Pustakalaya vigyan ke siddhanth 

 - New Delhi  Arjun Publishing House  2011 
 - 295p. 
<br/><br/><label>ISBN: </label>9788183302821 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library and Information Science
<br/><br/><label>Dewey Class. No.: </label>H 020