Columbia subject headings:
Komunistická strana Československa--History.
Working class--Slovakia.
Working class--Ukraine--Zakarpatsʹka oblastʹ.
Harvard subject headings:
Komunistická strana Československa--History.
Working class--Slovakia.
Working class--Ukraine--Zakarpatsʹka oblastʹ.
Princeton subject headings:
Komunistická strana Československa--History.
Working class--Slovakia.
Working class--Ukraine--Zakarpatskai︠a︡ oblastʹ.