Columbia subject headings:
Mediterranean Region--Emigration and immigration--History--To 1500--Congresses.
Population geography--Mediterranean Region--Congresses.
Travel, Ancient--Congresses.
Harvard subject headings:
Mediterranean Region--Antiquities--Congresses.
Mediterranean Region--Emigration and immigration--History--To 1500--Congresses.
Population geography--Mediterranean Region--Congresses.
Social mobility--Mediterranean Region--Congresses.
Travel, Ancient--Congresses.
Princeton subject headings:
Mediterranean Region--Emigration and immigration--History--To 1500--Congresses.
Population geography--Mediterranean Region--Congresses.
Travel, Ancient--Congresses.