Columbia subject headings:
Caucasus, Northern (Russia)--Ethnic relations.
Caucasus, Northern (Russia)--Politics and government--19th century.
Caucasus, Northern (Russia)--Politics and government--20th century.
Harvard subject headings:
Caucasus, Northern (Russia)--Ethnic relations.
Caucasus, Northern (Russia)--Politics and government--19th century.
Caucasus, Northern (Russia)--Politics and government--20th century.
Princeton subject headings: