Columbia subject headings:
Harvard subject headings:
Catholic Church--Clergy--Training of.
Exempla--Early works to 1800.
Eye--Early works to 1800.
Optics--Early works to 1800
Peter, of Limoges, -1306. De oculo morali
Peter.
Vision--Early works to 1800.
Vision--Moral and ethical aspects--Early works to 1800.
Vision--Religious aspects--Christianity--Early works to 1800.
Princeton subject headings:
Exempla--Early works to 1800.
Eye--Early works to 1800.
Optics--Early works to 1800.
Peter, of Limoges, -1306. De oculo morali.
Vision--Early works to 1800.
Vision--Religious aspects--Christianity--Early works to 1800.