Columbia subject headings:
Germany--Foreign relations.
Germany--Politics and government--To 1517.
Ludwig IV, Holy Roman Emperor, 1282?-1347.
Harvard subject headings:
Germany--Foreign relations.
Germany--Politics and government--To 1517.
Ludwig IV, Holy Roman Emperor, 1282?-1347.
Princeton subject headings:
Germany--Foreign relations.
Germany--Politics and government--To 1517.
Ludwig IV, Holy Roman Emperor, 1282?-1347.