TY  - GEN
AU  - Koch, A. Robert.
TI  - Economic principles : growth and environment
AV  - HB171.5 Koc.
PY  - 1986///
PB  - AVI Publishing Co.
KW  - Economics
KW  - Economic development
KW  - Land use
KW  - Supply and demand
N1  - 115
ER  -