Columbia subject headings:
Baptism, Eucharist, and ministry--Congresses.
Baptism--Congresses.
Clergy--Office--Congresses.
Lord's Supper--Congresses.
Orthodox Eastern Church--Doctrines--Congresses.
Sacraments and Christian union--Congresses.
Harvard subject headings:
Baptism, Eucharist, and ministry--Congresses.
Baptism--Congresses.
Clergy--Office--Congresses.
Lord's Supper--Congresses.
Orthodox Eastern Church--Doctrines--Congresses.
Sacraments and Christian union--Congresses.
Princeton subject headings: