Columbia subject headings:
Alphonse, Count of Poitiers and of Toulouse, 1220-1271.
Poitou (France)--Economic conditions--Sources.
Poitou (France)--History--Sources.
Harvard subject headings:
Alphonse, Count of Poitiers and of Toulouse, 1220-1271.
Poitou (France)--Economic conditions--Sources.
Poitou (France)--History--Sources.
Princeton subject headings:
Alfonse, Count of Poitiers and Toulouse, 1220-1271.
Poitou (France)--Economic conditions--Sources.
Poitou (France)--History--Sources.