Columbia subject headings:
Church history--Primitive and early church, ca. 30-600.
Coptic manuscripts (Papyri)
Egypt--Church history.
Liturgics.
Manuscripts (Papyri)
Harvard subject headings:
Coptic Church--Liturgy--History--Sources.
Coptic Church--Liturgy--History.
Liturgies, Early Christian--History and criticism.
Manuscripts, Greek (Papyri)--Egypt
Princeton subject headings: