Columbia subject headings:
Bessarabia (Moldova and Ukraine)--History.
Social classes--Bessarabia (Moldova and Ukraine)--History--19th century.
Harvard subject headings:
Bessarabia (Moldova and Ukraine)--Economic conditions.
Middle class--Bessarabia (Moldova and Ukraine)--History--19th century.
Princeton subject headings:
Bessarabia (Moldova and Ukraine)--History.
Social classes--Bessarabia (Moldova and Ukraine)--History--19th century.