TY  - BOOK
AU  - Longwell,C.R.
AU  - Flint,R.F
TI  - Introduction to Physical Geology
PY  - 1955///
CY  - New York
PB  - John Wiley 
KW  - Geology
KW  - Physical Geology
KW  - Earth Science
KW  - Geologic Processes
ER  -