Dahiya, Pushpa <br/><br/>
Environmental science :  a new approach / 
Pushpa Dahiya, Manisha Ahlawat 
 - Oxford :  Alpha Science,  c2013 
 - viii, 246 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>9781842656266 (hbk.) 1842656260 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences<br/>Ecology