Columbia subject headings:
Harvard subject headings:
Caucasus--Foreign relations--Europe.
Caucasus--Foreign relations.
Caucasus--Politics and government.
Caucasus--Religion.
Caucasus--Social conditions.
Princeton subject headings:
Caucasus--Foreign relations--Europe.
Caucasus--Foreign relations.
Caucasus--Politics and government.
Caucasus--Religion.
Caucasus--Social conditions.