Woodbury, Angus M <br/><br/>
Principles of general ecology 

 -  McGraw-Hill Book Co. Inc., NewYork  1953 
 - 503 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology; Biology
<br/><br/><label>Dewey Class. No.: </label>PG 574.5  WOO-P