TY  - BOOK
AU  - Thomas,William Leroy
TI  - International symposium on man's role in changing the face of the Earth
AV  - G56.I63 
PY  - 1956///
CY  - Chicago
PB  - University of Chicago Press
KW  - Human geography
KW  - Congresses
N1  - Includes bibliographical references
ER  -