Trivedi , P.R. . <br/><br/>
Environmental Ecology /  Textual Documents 
P.R. Trivedi & Gurdeep Raj. 
 - 1st ed / 
 - New Delhi :  Akashdeep Publishing House ,  1992. 
 - 502p. ;  22cm.. 
<br/><br/><label>ISBN: </label>81-7158-243-5 
<br/><br/><label>Subjects--Index Terms: </label>Botany Ecology Environment G-Technology 
<br/><br/><label>Dewey Class. No.: </label>581.5  / Tr 73 En 620.8  / Tr 73 En