Columbia subject headings:
Lord's Supper--History--Middle Ages, 600-1500.
Thomas, Aquinas, Saint, 1225?-1274.
Harvard subject headings:
Catholic Church--Doctrines--Early works to 1800.
Lord's Supper--History--Middle Ages, 600-1500
Theology--Early works to 1800
Thomas, Aquinas, Saint, 1225?-1274. Summa theologica.
Princeton subject headings: