TY  - BOOK
AU  - Beach, E.F
TI  - Economic models: an exposition  
U1  - 330 
PY  - 1957///
CY  - New York
PB  - John Wiley & Sons Inc
KW  - Economics
KW  - Mathematical models
KW  - Econometric models
KW  - Simple regression theory
KW  - Multiple relations
ER  -