TY  - BOOK
AU  - Leamer Edward E
TI  - Specification searches: ad-hoc inference with nonexperimental data
T2  - Wiley series in probability and mathematical statisics
U1  - B28, L85 
PY  - 1978///
CY  - New York    
PB  -  John Wiley       
N1  - Bibliography 350-366p
ER  -