Columbia subject headings:
Harvard subject headings:
Constantinople (Ecumenical patriarchate)--Bishops--Biography.
Grēgorios V, Patriarch of Constantinople, 1745-1821.
Patriarchs and patriarchate--Turkey--Istanbul--Biography.
Princeton subject headings:
Constantinople (Ecumenical patriarchate)--Bishops--Biography.
Grēgorios V, Patriarch of Constantinople, 1745-1821.
Patriarchs and patriarchate--Turkey--Istanbul--Biography.