Chitkara, M.G. <br/><br/>
Encyclopaedia of ecology,environment and pollution  science, technology and environment 

 - New Delhi  APH  1998 
 - xv,155p.  25cm 
<br/><br/><label>ISBN: </label>8170248868 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>Dewey Class. No.: </label>577.2703  / CHI