Columbia subject headings:
Harvard subject headings:
Emperors--Sexual behavior--Japan--History--To 1500.
Emperors--Sexual behavior--Japan--History.
Emperors--Succession--Japan--History--To 1500.
Emperors--Succession--Japan--History.
Empresses--Japan--History--To 1500.
Empresses--Japan--History.
Japan--History--To 1185.
Japan--Politics and government--To 1600.
Marriages of royalty and nobility--Japan--History--To 1500.
Marriages of royalty and nobility--Japan--History.
Princeton subject headings:
Emperors--Sexual behavior--Japan--History.
Emperors--Succession--Japan--History.
Empresses--Japan--History.
Japan--History--To 1185.
Japan--Politics and government--To 1600.
Marriages of royalty and nobility--Japan--History.