Columbia subject headings:
Castles--France--History.
France--Politics and government--1328-1589.
France--Politics and government--987-1328.
France--Politics and government--To 987.
France--Population--History.
Land use--France--History.
Harvard subject headings:
Castles--France--History.
France--Politics and government--1328-1589.
France--Politics and government--987-1328.
France--Politics and government--To 987.
France--Population--History.
France--Social conditions.
Land use--France--History.
Princeton subject headings:
Castles--France--History.
France--Politics and government--1328-1589.
France--Politics and government--987-1328.
France--Politics and government--To 987.
France--Population--History.
Land use--France--History.