Columbia subject headings:
Harvard subject headings:
Gnostic literature--History and criticism.
Gnosticism
Neoplatonism.
Philosophy, Ancient.
Platonists.
Plotinus
Turner, John Douglas
Princeton subject headings:
Gnostic literature--History and criticism.
Gnosticism.
Neoplatonism.
Philosophy, Ancient.
Platonists.
Plotinus.
Turner, John D. (John Douglas)