Columbia subject headings:
Census undercounts--United States.
United States--Census, 1980.
United States. Bureau of the Census.
Harvard subject headings:
Census undercounts--United States.
United States--Census, 1980.
United States. Bureau of the Census
Princeton subject headings:
Census undercounts--United States.
United States--Census, 20th, 1980.
United States. Bureau of the Census