Columbia subject headings:
Harvard subject headings:
Atra (Pontus)--History.
Greeks--Pontus--History.
Pontus--Social life and customs.
Princeton subject headings:
Aridaia (Greece)--History.
Dörtkonak (Gümüşhane İli, Turkey)--Ethnic relations--History.
Greco-Turkish War, 1921-1922--Refugees--Greece--Aridaia.
Greeks--Turkey--Dörtkonak (Gümüşhane İli)--History.