Columbia subject headings:
Duns Scotus, John, approximately 1266-1308.
Mary, Blessed Virgin, Saint--Religion.
Harvard subject headings:
Duns Scotus, John, approximately 1266-1308.
Mary, Blessed Virgin, Saint--Theology.
Princeton subject headings:
Duns Scotus, John, approximately 1266-1308--Contributions in theology.
Immaculate Conception--History of doctrines.
Mary, Blessed Virgin, Saint--History of doctrines.