TY  - BOOK
AU  - Thornbury, William D.
TI  - Principles of Geomorphology
U1  - 551.4 
PY  - 1969///
CY  - New Delhi
PB  - Wiley Eastern Ltd.
KW  - Pure Sciences
KW  - Science of the earth and other worlds
KW  - Geomorphology
ER  -