Huntington, Ellsworth. <br/><br/>
Principles of human geography /  
by Ellswoth Huntington and Sumner W. Cushing. 
 - 4th ed. 
 - New York :   John Wiley,   1934. 
 - XXII, 467 p. ;   23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geografía humana