Columbia subject headings:
Harvard subject headings:
Khakasskai︠a︡ avtonomnai︠a︡ oblastʹ (Russia)--Economic conditions.
Khakasskai︠a︡ avtonomnai︠a︡ oblastʹ (Russia)--Social conditions.
Princeton subject headings:
Khakasskai︠a︡ avtonomnai︠a︡ oblastʹ (R.S.F.S.R.)--Economic conditions.
Khakasskai︠a︡ avtonomnai︠a︡ oblastʹ (R.S.F.S.R.)--Social conditions.