TY  - BOOK
AU  - Christopherson, Robert W.
TI  - Geosystems: : an introduction to physical geography
SN  - 0-13-505314-5
U1  - 910.02 
PY  - 1997///
CY  - New Jersey
PB  - Prentice Hall
KW  - Physical geography
N1  - Includes bibliography references and index
ER  -