Chhatwal, G.R.(ed); Pandey, D.K.(ed) & Nanda, K.K.(ed) <br/><br/>
Encyclopaedic dictionary of environment 

 - 1st ed 
 - Anmol Pub., New Delhi  1988 
 - vi,321-640 
<br/><br/><label>ISBN: </label>81-7041-100-9 
<br/><br/><label>Dewey Class. No.: </label>R 301.303 Chh