Columbia subject headings:
Harvard subject headings:
Ditch, Battle of the, Medina, Saudi Arabia, 627
Islamic Empire--History--622-661
Muḥammad, Prophet, -632--Military leadership.
Princeton subject headings:
Ditch, Battle of the, Medina, Saudi Arabia, 627.
Islamic Empire--History--622-661.
Muḥammad, Prophet, -632--Military leadership.