identifier for panel individual; 716 total
year interviewed (1982, 1983, 1985, 1987, 1988)
ln(wage/GNP deflator)
usual hours worked
age in current year
current grade completed
= 1 if college graduate
= 1 if married, spouse present
= 1 if never yet married
= 1 if not SMSA
= 1 if central city
= 1 if south
= 1 if black; 0 if white
= 1 if union member
= total work experience
= exper^2
= job tenure, in years
= tenure^2