Chitkara, M.G. <br/><br/>
Encyclopaedia of ecology, environment and pollution  
M. G. Chitkara 
 - New Delhi:  APH Publishing,  1998. 
 -  15 vols. set 
<br/><br/> HB 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>8170248809 8170248817 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment-Encyclopaedias<br/>Ecology-Encyclopaedias<br/>Polution- Encyclopaedias 
<br/><br/><label>Dewey Class. No.: </label>577.03  / CHE