Columbia subject headings:
Chaucer, Geoffrey, -1400. Parson's tale.
Laurent, d'Orléans, active 1279. Somme le Roi.
Harvard subject headings:
Chaucer, Geoffrey, -1400. Parson's tale.
Lorens, Frère. Somme de Vices, etc.
Princeton subject headings:
Chaucer, Geoffrey, -1400. Parson's tale.
Laurent, d'Orléans, active 1279. Somme des vices des vertus.