Columbia subject headings:
Congress of Vienna (1814-1815)
Europe--Politics and government--1789-1815.
Perth, Matthias Franz, 1788-1856.
Harvard subject headings:
Congress of Vienna (1814-1815)
Europe--Politics and government--1789-1815.
Perth, Matthias Franz, 1788-1856.
Princeton subject headings:
Congress of Vienna (1814-1815)--Sources.