TY  - BOOK
AU  - Koch,A Robert, x
AU  - x
TI  - Economic principles: growth and environment
SN  - 087055509x
U1  - 330.9/K76e 
PY  - 1986///
CY  - Connecticut
PB  - AVI Pub
KW  - Economics
KW  - Economic conditions
N1  - includes
ER  -