Columbia subject headings:
Harvard subject headings:
Albigenses.
Christian heresies--France--Languedoc--History--Middle Ages, 600-1500
France--Church history--987-1515.
France--History--13th century.
Montségur (France)--Description and travel.
Montségur (France)--History.
Princeton subject headings:
Albingenses.
Montségur (France)--Antiquities.