Columbia subject headings:
Harvard subject headings:
Great Britain--History--Medieval period, 1066-1485--Historiography.
Great Britain--Politics and government--1066-1485
Holy Roman Empire--History--843-1273--Historiography.
Holy Roman Empire--Politics and government--Historiography.
Kings and rulers--To 1500.
Poland--History--1138-1305--Historiography.
Poland--Politics and government--Historiography.
Princeton subject headings:
Great Britain--Kings and rulers--Historiography--12th century.
Great Britain--Kings and rulers--Historiography--13th century.
Holy Roman Empire--Kings and rulers--Historiography--12th century.
Holy Roman Empire--Kings and rulers--Historiography--13th century.
Poland--Kings and rulers--Historiography--12th century.
Poland--Kings and rulers--Historiography--13th century.