Columbia subject headings:
Great Britain--Civilization--1066-1485--Congresses.
Great Britain--Politics and government--1066-1485--Congresses.
Harvard subject headings:
Great Britain--Civilization--1066-1485.
Great Britain--Politics and government--1066-1485.
Princeton subject headings:
Great Britain--Civilization--1066-1485.
Great Britain--Politics and government--1066-1485.