Columbia subject headings:
Privacy, Right of--United States.
United States--Census, 1990.
United States--Census, 2000.
United States--Census.
United States. Bureau of the Census.
Harvard subject headings:
Privacy, Right of--United States
United States--Census, 1990.
United States--Census, 2000.
United States--Census--Methodology.
United States. Bureau of the Census
Princeton subject headings:
Census--Methodology.
Census--Statistical methods.
Sampling (Statistics)