TY  - BOOK
AU  - Wilson A G
AU  - Wilson A G
TI  - Geography and the environment: systems analytical methods
SN  - 0471279560
U1  - 910 
PY  - 1981///
CY  - New york
PB  - John wiley $ sons
KW  - geography-methdology
KW  - systems theory
ER  -