Columbia subject headings:
Baptism, Eucharist, and ministry.
Baptism.
Catholic Church--Doctrines.
Clergy--Office.
Lord's Supper.
Sacraments and Christian union.
Harvard subject headings:
Baptism
Christian union
Lima-Erklärungen über Taufe, Eucharistie und Amt.
Lord's Supper
Ordination
Princeton subject headings: