Rana, S V S. <br/><br/>
Essential of ecology and environmental science / 
By S V S Rana. 
 - 5th. 
 - Delhi :  PHI Learning Pvt,  2015. 
 - xvii, 590 p. ;  00 cm. 
<br/><br/><label>ISBN: </label>9788120347861 
<br/><br/><label>Subjects--Topical Terms: </label><br/>micro biology.
<br/><br/><label>Dewey Class. No.: </label>628  / RAN