TY  - GEN
AU  - Christopherson, Robert W.
TI  - Geosystems: an introduction to physical geography 
SN  - 0130108456
U1  - 910.02 CHR 
PY  - 2000///
CY  - Upper Saddle River, NJ
PB  - Prentice Hall
KW  - Physical geography
ER  -