Columbia subject headings:
Castlereagh, Robert Stewart, Viscount, 1769-1822.
Great Britain--History--1789-1820.
Great Britain--Politics and government--1789-1820.
Statesmen--Great Britain--Biography.
Harvard subject headings:
Castlereagh, Robert Stewart, Viscount, 1769-1822.
Great Britain--History--1789-1820.
Great Britain--Politics and government--1789-1820.
Statesmen--Great Britain--Biography.
Princeton subject headings:
Castlereagh, Robert Stewart, Viscount, 1769-1822.
Great Britain--History--1789-1820.
Great Britain--Politics and government--1789-1820.
Statesmen--Great Britain--Biography.