Kulshreshtha, Sushma, ed. <br/><br/>
Paryavaran-prabhutvam sanskrit-sahitya evam paryavaran 

 - Delhi  Eastern Book liners  1999 
 - 453 p. 
<br/><br/><label>ISBN: </label> RS750 
<br/><br/><label>Dewey Class. No.: </label>891.209 P259P