TY  - BOOK
AU  - Strahler, Alan  .
TI  - Physical geography science and systems of the human environment / 
SN  - 0-471-23800-7
U1  - U2 
PY  - 1997///
CY  - New York : 
PB  - John Wiley & Sons, Inc. , 
KW  - Geography
ER  -