Columbia subject headings:
Eucharistic prayers--Eastern churches--Texts--History and criticism.
Liturgies, Early Christian--Texts--History and criticism.
Lord's Supper (Liturgy)--Texts--History and criticism.
Harvard subject headings:
Eastern churches--Liturgy--Texts--History and criticism.
Eucharistic prayers--Eastern churches--Texts--History and criticism.
Eucharistic prayers.
Liturgies, Early Christian--Texts--History and criticism.
Liturgies, Early Christian.
Princeton subject headings: