Columbia subject headings:
Casel, Odo, 1886-1948--Criticism and interpretation.
Catholic Church--Doctrines--History.
Catholic Church--Liturgy--History.
Christian union--Catholic Church.
Jesus Christ--Mystical body--History of doctrines.
Harvard subject headings:
Casel, Odo, 1886-1948--Criticism and interpretation.
Catholic Church--Doctrines--History.
Catholic Church--Liturgy--History.
Ecumenical movement--Catholic Church.
Jesus Christ--Mystical body--History of doctrines.
Princeton subject headings: