Columbia subject headings:
Holy Roman Empire--History--To 1517.
Holy Roman Empire--Kings and rulers.
Holy Roman Empire--Politics and government.
Power (Social sciences)--Germany.
Social history--Medieval, 500-1500.
Harvard subject headings:
Holy Roman Empire--History--To 1517.
Holy Roman Empire--Kings and rulers.
Holy Roman Empire--Politics and government.
Power (Social sciences)--Germany.
Princeton subject headings:
Holy Roman Empire--History--To 1517.
Holy Roman Empire--Kings and rulers.
Holy Roman Empire--Politics and government.
Power (Social sciences)--Germany.