Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Emigration and immigration--20th century--Congresses.
Balkan Peninsula--Population--Congresses.
Immigrants--Turkey--History--Congresses.
Immigrants--Turkey--Social life and customs--Congresses.
Population transfers--Turks--History--Congresses.
Refugees--Turkey--History--Congresses.
Rumelia--History--Congresses.
Turkey--Emigration and immigration--20th century--Congresses.
Turks--Balkan Peninsula--History--Congresses.
Princeton subject headings:
Balkan Peninsula--Emigration and immigration--20th century--Congresses.
Balkan Peninsula--Population--Congresses.
Immigrants--Turkey--History--Congresses.
Immigrants--Turkey--Social life and customs--Congresses.
Population transfers--Turks--History--Congresses.
Refugees--Turkey--History--Congresses.
Rumelia--History--Congresses.
Turkey--Emigration and immigration--20th century--Congresses.
Turks--Balkan Peninsula--History--Congresses.