TY  - BOOK
AU  - Coates D R
AU  -  Vitek J D
TI  - Thresholds in geomorphology
U1  - H422z7, M0 
PY  - 1980///
CY  - London
PB  - George-llen & Unwin       
KW  -  Dynamic geology
KW  - Geomorphology
ER  -