Columbia subject headings:
Catholic Church--Doctrines.
Lord's Supper--Catholic Church--History of doctrines.
Theology, Doctrinal.
Harvard subject headings:
Catholic Church--Doctrines.
Lord's Supper--Catholic Church--History of doctrines.
Theology, Doctrinal.
Princeton subject headings:
Catholic Church--Doctrines.
Lord's Supper--Catholic Church--History of doctrines.
Theology, Doctrinal.