TY  - BOOK
AU  - Thormbury, William D
AU  - 
TI  - Principles of geomorphology
U1  - 551.4 
PY  - 1969///
CY  - New York
PB  - Wiley Eastern
KW  - Geomorphology
KW  - Geology
N1  -  Bibliog. p. 573-576
ER  -