Santra, S. C. <br/><br/>
Environmental Science :  For Students of Indian University / 
Santra, S. C. 
 - 2nd ed. 
 - xxix,1244p. 
<br/><br/><label>ISBN: </label>817381404x 
<br/><br/><label>Dewey Class. No.: </label>363.7