Columbia subject headings:
Abaza--History--19th century--Sources.
Abkhazia (Georgia)--History--19th century--Sources.
Caucasus--History--19th century--Sources.
Karachay-Cherkessia (Russia)--History--19th century--Sources.
Harvard subject headings:
Abaza--History--19th century--Sources.
Abkhazia (Georgia)--History--19th century--Sources.
Caucasus--History--19th century--Sources.
Karachay-Cherkessia (Russia)--History--19th century--Sources.
Princeton subject headings:
Abkhazians.
Caucasus--History.
Circassians.