Columbia subject headings:
Caucasus, Northern (Russia)--History.
Cossacks--History.
Cossacks--Russia (Federation)--Caucasus, Northern.
Harvard subject headings:
Caucasus, Northern (Russia)--Ethnic relations.
Caucasus, Northern (Russia)--History.
Caucasus--Ethnic relations.
Cossacks--Caucasus.
Cossacks--Russia (Federation)--Caucasus, Northern--History.
Princeton subject headings:
Caucasus, Northern (Russia)--Ethnic relations.
Caucasus, Northern (Russia)--History.
Cossacks--Russia (Federation)--Caucasus, Northern--History.