Columbia subject headings:
Natural disasters--Europe--History--To 1500--Historiography.
Natural disasters--Europe--History--To 1500.
Natural disasters--Social aspects--Europe.
Harvard subject headings:
Europe--History--476-1492.
Natural disasters--Europe--History--To 1500--Historiography.
Natural disasters--Europe--History--To 1500.
Natural disasters--Europe--Social aspects.
Princeton subject headings:
Natural disasters--Europe--History--To 1500--Historiography.
Natural disasters--Europe--History--To 1500.
Natural disasters--Europe--Social aspects.