Columbia subject headings:
Ethnology--United States--Maps.
Ethnology--United States--Statistics.
Ethnology--United States.
Maps.
United States--Census, 1980.
United States--Population.
Harvard subject headings:
Ethnology--United States
Ethnology--United States--Maps.
Ethnology--United States--Statistics.
United States--Census, 1980.
United States--Population.
Princeton subject headings:
Ethnology--United States--Maps.
Ethnology--United States--Statistics.
Ethnology--United States.
United States--Census, 20th, 1980.
United States--Population.