Columbia subject headings:
Greek newspapers--Turkey--Istanbul--History--19th century.
Greeks--Pontus--History--Sources.
Harvard subject headings:
Greek newspapers--Turkey--Istunbul--History--19th century.
Greeks--Pontus--History--Sources.
Princeton subject headings:
Greeks--Pontus--History--19th century--Sources.
Pontus--Ethnic relations--History--19th century--Sources.