TY  - BOOK
ED  - International Symposium on Man's Role in Changing the Face of the Earth (1955 : Princeton, N. J.)
ED  - Thomas, William Leroy,
TI  - Man's role in changing the face of the earth
SN  - 0226796035
PY  - 1956///
CY  - Chicago, Ill.
PB  - University of Chicago Press
KW  - Human geography
KW  - Congresses
ER  -