Anuj Kumar Rana,Manoj Kumar Rana <br/><br/>
Environment and Ecology :  a scientific approach 

 - New Delhi:  Global vision publishing house,  2011. 
 - xii,319. 
<br/><br/><label>ISBN: </label>9788182203884 
<br/><br/><label>Dewey Class. No.: </label>371.262  / ANU.E