Trivedi, P. R., <br/><br/>
Ecology and environment / 
P. R. Trivedi 
 - New Delhi :  APH Publishing corporation,  2004 
 - 202 p.  ;  22 cm. 
<br/><br/><label>ISBN: </label>8176485322  RM44.35  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Ecology--Study and teaching