Columbia subject headings:
Minorities.
Ruthenia.
World War--1914-1918--Territorial questions--Czechoslovakia--Ruthenia.
Harvard subject headings:
Minorities
World War, 1914-1918--Territorial questions--Ukraine--Zakarpatsʹka oblastʹ.
Zakarpatsʹka oblastʹ (Ukraine)
Princeton subject headings:
Minorities.
Ruthenia.
World War, 1914-1918--Territorial questions--Ruthenia.