TY  - BOOK
AU  - Thornbury, William D
TI  - Principles of geomorphology
U1  - 551.4 T393P(3) 
PY  - 2019///
CY  - New Delhi
PB  - New Age International (P) Limited
N1  - 3131 25/05/2018 RK18/423 29/05/2018 Main Budget
ER  -