Columbia subject headings:
Working class--Russia (Federation)--Russian Far East.
Working class--Russia (Federation)--Siberia.
Harvard subject headings:
Labor--Russia (Federation)--Russian Far East.
Labor--Russia (Federation)--Siberia.
Working class--Russia (Federation)--Russian Far East.
Working class--Russia (Federation)--Siberia.
Princeton subject headings:
Labor--Russia (Federation)--Russian Far East.
Labor--Russia (Federation)--Siberia.