TY  - BOOK
AU  - Thornbury,William D.(William David),1900-
TI  - Principles of geomorphology
U1  - 551.41 
PY  - 1985///
CY  - New York
PB  - Wiley Eastern limited
KW  - Geomorphology
KW  - Géomorphologie
KW  - Tectonique
ER  -