TY  - BOOK
AU  - Arthur N.Strahler
TI  - Physical geography
SN  -  10 9 8 7 6 5 4 3
AV  - GB56.S75  
PY  - 1969///
CY  -  New York  
PB  -  : Wile
KW  -  Physical geography
N1  -  Includes bibliography
ER  -