TY  - BOOK
AU  - Hafkamp Wilhelmus A.
TI  - Economic environmental modeling in a national regi
T2  - Studies in Regional Science and Urban Economics. 10
U1  - X:(G:55), M4 
PY  - 1984///
CY  - Amsterdam
PB  - North Holland Netherland        
KW  - Environmental Economics
ER  -