Columbia subject headings:
Circassians--Congresses.
Circassians--Turkey--Congresses.
Harvard subject headings:
Caucasus, Northern (Russia)--Ethnic relations.
Caucasus--Ethnic relations.
Circassians--Congresses.
Princeton subject headings:
Caucasus, Northern (Russia)--Emigration and immigration--History--Congresses.
Caucasus, Northern (Russia)--History--Congresses.
Caucasus--History--Congresses.
Circassians--Caucasus--History--Congresses.
Circassians--Turkey--History--Congresses.
Refugees--Turkey--History--Congresses.
Turkey--Emigration and immigration--History--Congresses.
Turkey--Ethnic relations--Congresses.