Columbia subject headings:
Fortification--Egypt--History.
Saladin, Sultan of Egypt and Syria, 1137-1193.
Sinai (Egypt)--History.
Harvard subject headings:
Egypt--History--Saladin, 1171-1193
Sinai (Egypt)--Description and travel
Sinai (Egypt)--History.
Princeton subject headings:
Egypt--History--Saladin, 1171-1193.
Sinai (Egypt)--Description and travel.
Sinai (Egypt)--History.