Columbia subject headings:
Albigenses.
Bogomiles.
Christian heresies--History--Middle Ages, 600-1500.
Harvard subject headings:
Albigenses.
Bogomiles
Christian heresies--History--Middle Ages, 600-1500
Interrogatio Iohannis--Criticism, interpretation, etc.
Princeton subject headings:
Albigenses.
Bogomiles.