Columbia subject headings:
Harvard subject headings:
Great Britain--History--Richard I, 1189-1199--Congresses.
Great Britain--Kings and rulers--Congresses.
Richard I, King of England, 1157-1199--Congresses.
Princeton subject headings:
Great Britain--History--Angevin period, 1154-1216--Congresses.
Great Britain--History--Richard I, 1189-1199--Congresses.
Richard I, King of England, 1157-1199--Congresses.