Conflict and harmony :  a source-book of man in his environment / 
compiled and edited by Grace E. King 
 - London :  George Philip & Son,  1972 
 - 450 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0540009539 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology<br/>Geography, Economic