Verma, P. S. <br/><br/>
Environmental biology 

 -  2013 
 - 591 p 
<br/><br/><label>ISBN: </label>9788121908597 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Biology Ecology
<br/><br/><label>LC Class. No.: </label>QH 541 .V47/