Columbia subject headings:
Mary, Blessed Virgin, Saint--Liturgy--Orthodox Eastern Church.
Orthodox Eastern Church--Doctrines.
Harvard subject headings:
Mary, Blessed Virgin, Saint--Feasts.
Mary, Blessed Virgin, Saint--History of doctrines.
Orthodox Eastern Church--Doctrinal and controversial works.
Orthodox Eastern Church--Liturgy.
Princeton subject headings:
Mary, Blessed Virgin, Saint--Devotion to.
Orthodox Eastern Church--Doctrines.