Columbia subject headings:
Albigenses--History.
Castles--France--Languedoc.
Christian heresies--France--Languedoc--History--Middle Ages, 600-1500.
France--Church history--987-1515.
Languedoc (France)--History, Military--Religious aspects.
Harvard subject headings:
Albigenses--History
Castles--France--Languedoc.
Christian heresies--France--Languedoc--History--Middle Ages, 600-1500
France--Church history--987-1515.
Languedoc (France)--History, Military--Religious aspects.
Princeton subject headings:
Albigenses--France, Southern--History.
Christian heresies--France, Southern--History--Middle Ages, 600-1500.
France, Southern--Church history--987-1515.
France, Southern--History--Religious aspects.