Columbia subject headings:
Harvard subject headings:
Germany--History--1273-1517--Congresses.
Holy Roman Empire--History--1273-1517--Congresses.
Middle Ages--Congresses
Moraw, Peter--Congresses.
Power (Social sciences)--Germany--Congresses.
Social history--Medieval, 500-1500--Congresses
Princeton subject headings:
Constitutional history--Holy Roman Empire.
Moraw, Peter--Influence.
Social structure--Holy Roman Empire--History.