Columbia subject headings:
Harvard subject headings:
Naturalization--United States--Statistics--Periodicals.
Noncitizens--United States--Statistics--Periodicals.
United States--Emigration and immigration--Statistics--Periodicals.
Princeton subject headings:
Naturalization--United States--Statistics--Periodicals.
Noncitizens--United States--Statistics--Periodicals.
Periodicals.
Statistics.
United States--Emigration and immigration--Statistics--Periodicals.