Columbia subject headings:
Metropolitan areas--United States--Statistics.
Harvard subject headings:
Census districts--United States.
Households--United States--Statistics
Housing--United States--Statistics
Metropolitan areas--United States--Statistics
United States--Census, 1970
United States--Census, 1970.
United States--Population--Statistics.
Princeton subject headings:
Housing--United States--Statistics.
Metropolitan areas--United States--Statistics.
Statistics.
United States--Census, 19th, 1970.
United States--Population--Statistics.