TY  - BOOK
AU  - Christopherson, Robert W
TI  - Geosystems: an introduction to physical geography
SN  - 0130108456
AV  - GB 54.5 .C48 2000 
PY  - 2000///
CY  - New Jersey
PB  - Prentice hall
KW  - Physical geography
N1  - Includes bibliographical references
ER  -