Trivedi, P.R. <br/><br/>
International encyclopedia of ecology and environment 
P.R. Trivedi. 
 - 3rd ed. 
 - New Delhi  Indian Institute of Ecology and Environment  1994 
 - Library has all the 30v. 
<br/><br/><label>ISBN: </label>81-7456-024-6. 
<br/><br/><label>Dewey Class. No.: </label>574.503  / T73I