log hourly wage (1979 $)
Years of age
Years of completed education
Married
Race other than white
CPS sample weight
Covered by a union contract
0-8 years of schooling
High school dropout
Some college
College graduate
College post-graduate
Year of potential experience
0-4 years of experience
5-9 years of experience
10-14 years of experience
15-19 years of experience
25-29 years of experience
30-34 years of experience
35-39 years of experience
40+ years of experience