TY  - BK
AU  - Howitt,R.
TI  - Optimization model building in economics
T2  - AGE
U1  - 330.015 1 HOW 
PY  - 1990///
CY  - California (USA)
PB  - University of California, 
KW  - AGROVOC
KW  - Economics
KW  - Mathematics
ER  -