Weaver, John E; Clements, Frederic E <br/><br/>
Plant ecology / 
Weaver, John E; Clements, Frederic E 
 - 2 ed. 
 -  McGraw-Hill Book Co., New York,  1938 
 - p. ;  22 cm. 
<br/><br/><label>ISBN: </label>0070687501 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant ecology; Botany
<br/><br/><label>Dewey Class. No.: </label>581.5 WEA-P2