TY  - BOOK
AU  - Thornbury,William D, x
AU  - x
TI  - Principles of geomorphology: x
SN  - 8123908113
U1  - 551.4/T497p 
PY  - 2002///
CY  - New Delhi
PB  - CBS Pub.
KW  - Geomorphology
KW  - Geology
N1  - Includes
ER  -