Columbia subject headings:
Constantinople (Ecumenical patriarchate)--Doctrines--History--Sources--Catalogs.
Gregory II, of Cyprus, Patriarch of Constantinople, 1241-1290--Manuscripts--Catalogs.
Manuscripts, Byzantine--Bibliography--Catalogs.
Orthodox Eastern Church--Doctrines--History--Sources--Catalogs.
Patriarchs and patriarchate--Turkey--Istanbul--History--Sources--Catalogs.
Harvard subject headings:
Christian literature, Byzantine
Constantinople (Ecumenical patriarchate)--Doctrines--History--Sources--Catalogs.
Gregory II, of Cyprus, Patriarch of Constantinople, 1241-1290--Manuscripts--Catalogs.
Manuscripts, Byzantine--Bibliography--Catalogs.
Orthodox Eastern Church--Doctrines--History--Sources--Catalogs.
Patriarchs and patriarchate--Turkey--Istanbul--History--Sources--Catalogs
Princeton subject headings:
Catalogs.
Constantinople (Ecumenical patriarchate)--Doctrines--History--Sources--Catalogs.
Gregory II, of Cyprus, Patriarch of Constantinople, 1241-1290--Manuscripts--Catalogs.
Manuscripts, Byzantine--Bibliography--Catalogs.
Orthodox Eastern Church--Doctrines--History--Sources--Catalogs.
Patriarchs and patriarchate--Turkey--Istanbul--History--Sources--Catalogs.