Columbia subject headings:
Bessarabia (Moldova and Ukraine)--History.
Ukraine--History--1917---Sources.
Ukrainians--Bessarabia (Moldova and Ukraine)
Harvard subject headings:
Bessarabia (Moldova and Ukraine)--History.
Ukraine--History--1917---Sources.
Ukrainians--Bessarabia.
Princeton subject headings:
Bessarabia (Moldova and Ukraine)--History.
Ukraine--History--1917-
Ukrainians--Bessarabia (Moldova and Ukraine).