Bhatia, A. L. <br/><br/>
A  Text  Book  of  Environmental  Biology 

 - 1st /   2010. 
 - Delhi:   I. K  International  Publishing  House,  2010. 
 - 418p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Zoology, Ecology. 
<br/><br/><label>Dewey Class. No.: </label>577