Preprocessing the 1960-1970 U. S. census public use samples.
D000389:Air Conditioning; D002965:Classification; D003201:Computers; D003710:Demography; D001330:Electronic Data Processing; D005191:Family Characteristics; D006798:Housing; D006801:Humans; D007182:Income; D007256:Information Systems; D011153:Population; D011676:Punched-Card Systems; D012494:Sampling Studies; D013637:Tape Recording; D014481:United States