TY  - BOOK
AU  - HAFKAMP, Wilhelmus A
TI  - Economic environmental modeling in a national--Regional system : an operational approach with multilayer projection
U1  - 330.018 4 H12W 
PY  - 1984///
PB  - Amsterdam
KW  - ECONOMICS -- ENVIRONMENTAL ASPECTS -- MATHEMATICAL MODELS
KW  - ECONOMICS -- ENVIRONMENTAL ASPECTS -- MATHE
KW  - ECONOMICS, MATHEMATICAL
KW  - MULTILAYER PROJECTION
ER  -