Gurdev Singh <br/><br/>
Upakar's UGC-NET/JRF/SET Library And Information Science (Paper-II & III) 
Gurdev Singh 
 - 
 - Agra  Upkar Prakashan  2013 
<br/><br/>  
<br/><br/><label>ISBN: </label>9789350133613  Rs 
<br/><br/><label>Dewey Class. No.: </label>020 UPK/UGC;1