Columbia subject headings:
Emigration and immigration--Periodicals.
Emigration and immigration--Statistics--Periodicals.
Migration, Internal--Periodicals.
Harvard subject headings:
Emigration and immigration--Periodicals
Emigration and immigration--Statistics--Periodicals.
Migration, Internal--Periodicals.
Princeton subject headings:
Emigration and immigration--Statistics--Periodicals.
Periodicals.
Statistics.