D.K. Asthana, Meera Asthana <br/><br/>
Environment: Problems and Solutions 
/ D K Asthana-Meera Asthana 
 - 2nd edition 
 -  S. Chand Publishing  1998 
 - 444 
<br/><br/><label>ISBN: </label>9788121916547 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research Methods
<br/><br/><label>Dewey Class. No.: </label>363.7  / D.K