Columbia subject headings:
Egypt--Description and travel.
Oases--Egypt--Social life and customs.
Oases--Egypt--Western Desert.
Harvard subject headings:
Egypt--Description and travel
Oases--Egypt--Social life and customs.
Oases--Egypt--Western Desert.
Princeton subject headings:
Egypt--Description and travel.
Oases--Egypt--Social life and customs.
Oases--Egypt--Western Desert.