Columbia subject headings:
Kharkiv (Ukraine)--History--20th century.
Ukraine--History--Revolution, 1917-1921.
Vishnevskai︠a︡, Marii︠a︡--Diaries.
Harvard subject headings:
Kharkiv (Ukraine)--History--20th century.
Ukraine--History--Revolution, 1917-1921.
Vishnevskai͡a, Marii͡a--Diaries.
Princeton subject headings: