Trivedi, P. R. and Raj, Gurdeep <br/><br/>
Environmental biology 

 - New Delhi  ; Akashdeep Publishing House  , 1992 
 - 392p. 
<br/><br/><label>ISBN: </label>817158232X  450 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology<br/>Ecology<br/>Environmental Biology
<br/><br/><label>Dewey Class. No.: </label>574.52  / TRI