Ambasht, R. S. <br/><br/>
Environment & pollution :  an ecological approach / 
 Environment and pollution :  an ecological approach. 
R.S. Ambasht & P.K. Ambasht. 
 - 2nd edition. 
 - Varanasi, India :  Students' Friends,  1992. 
 - 307 pages :  illustrations ;  22 cm. 
<br/><br/>Includes bibliographical references (pages [290]-302) and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution<br/>Ecology
<br/><br/><label>Dewey Class. No.: </label>363.73