Columbia subject headings:
Albigenses.
Christian heresies--History--Middle Ages, 600-1500.
Christian sects, Medieval.
Harvard subject headings:
Albigenses.
Christian heresies--History--Middle Ages, 600-1500
Christian sects, Medieval
Princeton subject headings:
Albigenses.
Christian heresies--History--Middle Ages, 600-1500.
Christian sects, Medieval.