Sharma, P D <br/><br/>
Environmental biology and toxicology 

 - 2nd 
 - Meerut  Rastogi Publications  1997 
 - xi,128 
<br/><br/><label>ISBN: </label>81-7133-285-4 
<br/><br/><label>Dewey Class. No.: </label>574 Sh23E