Chitkara, M.G. <br/><br/>
Encyclopaedia of ecology,environment and pollution  the mother earth 

 - New Delhi  APH  1998 
 - xii,381p.  25cm 
<br/><br/><label>ISBN: </label>8170248817 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>Dewey Class. No.: </label>577.2703  / CHI