Gopal, Brij <br/><br/>
Elements of Ecology 

 - New Delhi  Vikas Publishing House  1980 
 - 192p. 
<br/><br/><label>Subjects--Uniform Titles: </label>--General Stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural Science & mathematics--EcologyZoology--Life science; Biology
<br/><br/><label>Dewey Class. No.: </label>577  / GOP-E