Asthana, D. K. <br/><br/>
(A) Textbook of environmental studies/ 
D. K. Asthana and Meera Asthana. 
 - 2nd. ed. 
 - New Delhi :  S. Chand,  2012. 
 - xvi, 397p. :  24x18 cm. 
<br/><br/> Includes glossary, bibliography and index 
<br/><br/><label>ISBN: </label>81-219-2764-1:  Rs.200 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECOLOGY
<br/><br/><label>Dewey Class. No.: </label>574.5  / AST-ENV