Tripathi, Ramshankar <br/><br/>
Age ka prkati parivesh 

 - Rohtak  Manthan Publication  1994 
 - 172p. 
<br/><br/><label>ISBN: </label>81-85235-24-4 
<br/><br/><label>Dewey Class. No.: </label>8H1.4   Tri.N4