Textbook of environment and ecology / 
Vir Singh  
 - xxvii, 359 pages :  illustrations ;  25 cm. 
<br/><br/><label>ISBN: </label>9789819988488 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Environmental sciences<br/>Ecosystems
<br/><br/><label>LC Class. No.: </label>QH541  / SIN