Patnaik, Prabhat. <br/><br/>
Textbook of environmental science 

 - Delhi  Wisdom Press  2011 
 - 340p. 
<br/><br/><label>ISBN: </label> RS 950.00 
<br/><br/><label>Source: </label> RS 950.00 
<br/><br/><label>Dewey Class. No.: </label>363.7 PAT