Thomas, William Leroy <br/><br/>
International symposium on man's role in changing the face of the Earth 
William Leroy Thomas, Carl Ortwin Sauer, Marston Bates, Lewis Mumford 
 - Chicago :  University of Chicago Press,  1956. 
 - xxxviii, 1193p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human geography<br/>Congresses
<br/><br/><label>LC Class. No.: </label>G56.I63