Columbia subject headings:
Huesca (Spain)--Church history--Sources.
Santa María de Alaón (Monastery : Huesca, Spain)--History--Sources.
Harvard subject headings:
Huesca (Spain)--Church history--Sources.
Monasticism and religious orders--Spain--History--Middle Ages, 600-1500--Sources.
Santa María de Alaón (Monastery : Huesca, Spain)--History--Sources.
Princeton subject headings: