Columbia subject headings:
Indians of North America--Census, 1990.
United States--Census, 1990.
Harvard subject headings:
Indians of North America--Census, 1990.
Indians of North America--Population--Statistics.
Reference works.
United States--Census, 1990.
United States--Population--Statistics.
Princeton subject headings:
Indians of North America--Census, 1990.
United States--Census, 1990.