Columbia subject headings:
Harvard subject headings:
Japan--History--Attempted Mongol Invasions, 1274-1281.
Japan--History--Kamakura period, 1185-1333.
Japan--Social conditions.
Princeton subject headings:
Japan--Foreign policy--To 1600.
Japan--History--Attempted Mongol invasions, 1274-1333.
Japan--History--Kamakura period, 1185-1333.