Columbia subject headings:
Climate and civilization--Middle East--History--To 1500--Congresses.
Climatic changes--Social aspects--Middle East--History--To 1500--Congresses.
Middle East--Antiquities--Congresses.
Middle East--History--To 622--Congresses.
Harvard subject headings:
Climate and civilization--Middle East--History--To 1500--Congresses.
Climatic changes--Social aspects--Middle East--History--To 1500--Congresses.
Middle East--Antiquities--Congresses.
Middle East--History--To 622--Congresses.
Princeton subject headings:
Climate and civilization--Middle East--History--To 1500--Congresses.
Climatic changes--Social aspects--Middle East--History--To 1500--Congresses.
Middle East--Antiquities--Congresses.
Middle East--History--To 622--Congresses.