VERMA, P.S. Agarwal, V.K. <br/><br/>
Environmental biology (principles of ecology) / 
by P.S.Verma, V.K.Agarwal 
 - New Delhi  S.Chand  1996 
 - viii, 591 p. 
<br/><br/> Includes glossary, bibliography & index. 
<br/><br/><label>ISBN: </label>8121908590 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/> Environmental biology
<br/><br/><label>Dewey Class. No.: </label>577  / VER