TY  - BOOK
AU  - Thornbury Willliam D
TI  - Principles of geomorphology
T2  - FYUP DC-1 GEO
SN  - 8123908113 (pbk)
U1  - U21, P2 
PY  - 2002///
CY  - Chennai
PB  - CBS Publishers India      
KW  - GEOGRAPHY
ER  -