Columbia subject headings:
Harvard subject headings:
Hydrology--Mediterranean Region--History--To 1500--Congresses.
Land settlement--Mediterranean Region--History--To 1500--Congresses.
Mediterranean Region--Antiquities--Congresses
Water--Religious aspects--Mediterranean Region--Congresses.
Water--Social aspects--Mediterranean Region--Congresses.
Water--Symbolic aspects--Mediterranean Region--Congresses.
Princeton subject headings:
Hydrology--Mediterranean Region--History--To 1500--Congresses.
Land settlement--Mediterranean Region--History--To 1500--Congresses.
Mediterranean Region--Antiquities--Congresses.
Water--Mediterranean Region--Religious aspects--Congresses.
Water--Social aspects--Mediterranean Region--Congresses.
Water--Symbolic aspects--Mediterranean Region--Congresses.