TY  - BOOK
AU  - Gregory, K. J.  
AU  - Walling, D. E. 
TI  - Man and environmental processes : a physical geography perspective
T2  - Studies in Physical Geography
SN  - 0-408-10736-7
PY  - 1981///
CY  - London
PB  - Butterworth-Heinemann
KW  - GeologyMan-influence On Nature
ER  -