1. id person identifier
2. nearc2 =1 if near 2 yr college, 1966
3. nearc4 =1 if near 4 yr college, 1966
4. educ years of schooling, 1976
5. age in years
6. fatheduc father's schooling
7. motheduc mother's schooling
8. weight NLS sampling weight, 1976
9. momdad14 =1 if live with mom, dad at 14
10. sinmom14 =1 if with single mom at 14
11. step14 =1 if with step parent at 14
12. reg661 =1 for region 1, 1966
13. reg662 =1 for region 2, 1966
14. reg663 =1 for region 3, 1966
15. reg664 =1 for region 4, 1966
16. reg665 =1 for region 5, 1966
17. reg666 =1 for region 6, 1966
18. reg667 =1 for region 7, 1966
19. reg668 =1 for region 8, 1966
20. reg669 =1 for region 9, 1966
21. south66 =1 if in south in 1966
22. black =1 if black
23. smsa =1 in in SMSA, 1976
24. south =1 if in south, 1976
25. smsa66 =1 if in SMSA, 1966
26. wage hourly wage in cents, 1976
27. enroll =1 if enrolled in school, 1976
28. married =1 if married, 1976
29. exper age - educ - 6

Extra förklaringar:
NLS  betyder "National Longitudinal Surveys", det är data 
     som US Department of Labor, Bureau of Labor Statistics, 
     samlar in. Jag vet inte vad "weight" innebär.

SMSA betyder "Standard Metropolitan Statistical Areas"
     (a standard Census Bureau designation of the region 
     around a city in the United States)