Columbia subject headings:
Khakassians--History.
Khakasskai︠a︡ Respublika (Russia)--History.
Harvard subject headings:
Khakassians--History.
Khakasskai︠a︡ avtonomnai︠a︡ oblastʹ (Russia)--History.
Princeton subject headings:
Khakassians--History.
Siberia (Russia)--History.