Columbia subject headings:
Donets Basin (Ukraine and Russia)--Social conditions.
Donet︠s︡ʹk (Ukraine)--Social conditions.
Working class--Donets Basin (Ukraine and Russia)
Working class--Ukraine--Donet︠s︡ʹk.
Harvard subject headings:
Donets Basin (Ukraine and Russia)--Social conditions.
Donet︠s︡ʹk (Ukraine)--Social conditions.
Working class--Donets Basin (Ukraine and Russia)
Working class--Ukraine--Donet︠s︡ʹk.
Princeton subject headings:
Donets Basin (Ukraine and Russia)--Social conditions.
Donet︠s︡ʹk (Ukraine)--Social conditions.
Working class--Donets Basin (Ukraine and Russia).
Working class--Ukraine--Donet︠s︡k.