TY  - BOOK
AU  - Christopherson,Robert W.
TI  - Geosystems: an introduction to physical geography 
SN  - 9780321706225
PY  - 2012///
CY  - Boston
PB  - Prentice Hall
KW  - Physical geography
N1  - Fakulti Sains Bumi; Includes index
ER  -