TY  - BOOK
AU  - Thornbury , William D
TI  - Principles of geomorphology
U1  - 551.4/THO 
PY  - 1954///
CY  - NewYork
PB  - John Willey
KW  - Geology
KW  - Geomorphology
N1  - Includes bibliograpical references and index
ER  -