Columbia subject headings:
Deserts--Egypt--Guidebooks.
Oases--Egypt--Guidebooks.
Western Desert (Egypt)--Guidebooks.
Harvard subject headings:
Oases--Egypt--Guidebooks.
Western Desert (Egypt)--Guidebooks.
Princeton subject headings:
Deserts--Egypt--Guidebooks.
Guidebooks.
Oases--Egypt--Guidebooks.
Western Desert (Egypt)--Guidebooks.