Columbia subject headings:
Europe--Politics and government--18th century.
Holy Roman Empire--Foreign relations.
Track two diplomacy--Europe--History--18th century.
Harvard subject headings:
Europe--Politics and government--18th century.
Holy Roman Empire--Foreign relations.
Track two diplomacy--Europe--History--18th century.
Princeton subject headings:
Europe--Politics and government--18th century.
Holy Roman Empire--Foreign relations.
Track two diplomacy--Europe--History--18th century.