Columbia subject headings:
Divine office--Texts.
Orthodox Eastern Church--Liturgy--Texts--History and criticism.
Orthodox Eastern Church--Liturgy--Texts.
Saint Catherine (Monastery : Mount Sinai). Manuscript. Greek 864.
Harvard subject headings:
Divine office--Texts
Orthodox Eastern Church--Liturgy--Texts--History and criticism.
Orthodox Eastern Church--Liturgy--Texts.
Saint Catherine (Monastery : Mount Sinai). Manuscript. Greek 864.
Princeton subject headings:
Divine office--Texts.
Orthodox Eastern Church--Liturgy--Texts--History and criticism.
Orthodox Eastern Church--Liturgy--Texts.
Saint Catherine (Monastery : Mount Sinai). Manuscript. Greek 864