Columbia subject headings:
Ailly, Pierre d', 1350-1420?
Psychology--Philosophy.
Harvard subject headings:
Ailly, Pierre d', 1350-1420?--Contributions in the concept of the soul.
Soul--Early works to 1800
Soul--History of doctrines--Middle Ages, 600-1500.
Princeton subject headings:
Ailly, Pierre d', 1350-1420?
Soul--Early works to 1800.
Soul--History of doctrines--Middle Ages, 600-1500.