Nautiyal, Shivanand <br/><br/>
Paryavaran samasya aur samadhan 
by Shivanand Nautiyal 
 - New Delhi  Samyik Prakashan  1997 
 - 432p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment-problem,solution
<br/><br/><label>Dewey Class. No.: </label>O91 N226