Columbia subject headings:
Census--Case studies.
Census--Congresses.
Computer programming.
Demography.
Housing.
Population--Statistics.
Sampling (Statistics)
Statistics.
United States--Census, 1970.
Harvard subject headings:
Census--Case studies.
Computer programming
Demography.
Housing
Population--Statistics
Sampling (Statistics)
Statistics
United States--Census, 1970
Princeton subject headings: