Columbia subject headings:
Christos paschōn.
Greek drama--History and criticism.
Gregory, of Nazianzus, Saint.
Harvard subject headings:
Byzantine drama--History and criticism.
Christos paschōn--Authorship.
Christos paschōn.
Greek drama--History and criticism
Gregory, of Nazianzus, Saint
Princeton subject headings:
Christos paschōn.
Greek drama--History and criticism.
Gregory, of Nazianzus, Saint