Hawley, Amos Henry <br/><br/>
Human ecology / 
by Amos H. Hawley 
 - New York :  Ronald Press Co,  1950 
 - xvi, 456 p. :  maps, diagrs. ;  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>50-007591 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology