Columbia subject headings:
Harvard subject headings:
Aragon (Spain)--History--James I, 1213-1276--Congresses.
James I, King of Aragon, 1208-1276--Congresses.
Princeton subject headings:
Aragon (Spain)--History--James I, 1213-1276--Congresses.
James I, King of Aragon, 1208-1276--Congresses.