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

 - New Delhi  S.Chand  & Company Ltd  1983 
 - viii,591p.  21cm 
<br/><br/><label>ISBN: </label>8121908590 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Life sciences
<br/><br/><label>Dewey Class. No.: </label>570  / VER