Columbia subject headings:
Siberia, Eastern (Russia)--Economic conditions.
Siberia, Eastern (Russia)--History.
Working class--Russia (Federation)--Siberia, Eastern.
Harvard subject headings:
Labor productivity--Russia (Federation)--Siberia, Eastern--History--1945-
Socialism--Russia (Federation)--Siberia, Eastern--History.
Working class--Russia (Federation)--Siberia, Eastern--Political activity.
Princeton subject headings: