TY  - BOOK
AU  - Thomas, William. L.
AU  - Sauer, Carl. O.
AU  - Bates, Marston.
TI  - mans role in changing the face of the earth  vol 1 # Man's role in changing the face of the earth: Vol 1
SN  - 0-226-79604-3
U1  - 550:600 
PY  - 1956///
CY  - Chicago
ER  -