Prabu, P. C.; Udayasoorian, C. & Balasuramanian, G. <br/><br/>
An introduction to ecology and environmental science 

 - Avinash paperbacks, New Delhi  2009 
 - xii, 403 
<br/><br/><label>ISBN: </label>978-81-906929-0-8 
<br/><br/><label>Dewey Class. No.: </label>301.3 Pra