Columbia subject headings:
Rome--Emigration and immigration.
Rome--History--Empire, 30 B.C.-476 A.D.
Rome--Social conditions.
Harvard subject headings:
Migration, Internal--Rome--History.
Rome--Emigration and immigration.
Princeton subject headings:
Migration, Internal--Rome--History.
Rome--Emigration and immigration.
Rome--History--Empire, 30 B.C.-476 A.D.
Rome--Social conditions.