Columbia subject headings:
Harvard subject headings:
Crusades--First, 1096-1099
Crusades--Second, 1147-1149
Egypt--History--640-1250.
Fatimites.
Princeton subject headings:
Crusades--First, 1096-1099.
Crusades--Second, 1147-1149.
Egypt--History--640-1250.
Fatimites--History.