Columbia subject headings:
Communication in politics--Holy Roman Empire--History--To 1500.
Holy Roman Empire--History--Sigismund, 1411-1437.
Sigismund, Holy Roman Emperor, 1368-1437.
Harvard subject headings:
Communication in politics--Holy Roman Empire--History--To 1500.
Holy Roman Empire--History--Sigismund, 1411-1437.
Sigismund, Holy Roman Emperor, 1368-1437.
Princeton subject headings:
Communication in politics--Holy Roman Empire--History--To 1500.
Holy Roman Empire--History--Sigismund, 1411-1437.
Sigismund, Holy Roman Emperor, 1368-1437.