DUBEY, MANISH <br/><br/>
VIGYAN SHIKSHAN 

 - ALLAHABAD  SHARDA PUSTAK BHAVAN 
 - 336p. 
<br/><br/> 1503 
<br/><br/><label>ISBN: </label> 140 
<br/><br/><label>Dewey Class. No.: </label>507 DUB M