=1 if in labor force
hours worked, 1975
# kids < 6 years
# kids 6-18
woman's age in yrs
years of schooling
estimated wage
reported wage at interview in 1976
hours worked by husband, 1975
husband's age
husband's years of schooling
husband's hourly wage, 1975
family income
federal marginal tax rate facing woman
mother's years of schooling
father's years of schooling
unemployment rate of county
=1 if live in SMSA
years of labor market experience
(faminc - wage*hours)/1000
ln(wage)
exper^2