Sardana, J.L.. <br/><br/>
Universal Decimal Classification Structure and Methodology /  

 - 1st ed /  
 - New Delhi-2 :   Ess Ess Publications ,   1967 
 - p.208 :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library Science
<br/><br/><label>Dewey Class. No.: </label>2:51M96  / M3