Verma, P.S.  <br/><br/>
Environmental biology   Principles of ecology  

 - New Delhi  S.Chand & Company  1983 
 - viii, 591p.  ill. 
<br/><br/><label>ISBN: </label>8121908590 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>581.5  / VER