Columbia subject headings:
United States--Census, 1990.
United States--Population--Statistics.
Harvard subject headings:
Ethnology--United States--Statistics.
Immigrants--United States--Statistics.
Reference works
United States--Census, 1990
United States--Census, 1990.
United States--Genealogy--Statistics.
United States--Population--Statistics
Princeton subject headings:
Ethnology--United States--Statistics.
Immigrants--United States--Statistics.
Statistics.
United States--Census, 1990.
United States--Population--Statistics.