Columbia subject headings:
Crusades--Historiography.
Crusades--Study and teaching--Bio-bibliography.
Crusades--Study and teaching--Egypt.
Europe--History--476-1492.
Islamic Empire--History--750-1258.
Harvard subject headings:
Princeton subject headings:
Crusades--Historiography.
Crusades--Study and teaching--Bio-bibliography.
Crusades--Study and teaching--Egypt.
Historians--Egypt--Biography.