Columbia subject headings:
Bolʹshevik, Zavod, Leningrad--History.
Iron and steel workers--Russia (Federation)--Saint Petersburg.
Harvard subject headings:
Working class--Russia--Saint Petersburg.
Zavod "Bolʹshevik" (Saint Petersburg, Russia)--History.
Princeton subject headings:
Working class--Russia (Federation)--Saint Petersburg.
Zavod "Bolʹshevik" (Saint Petersburg, Russia)--History.