Columbia subject headings:
Harvard subject headings:
Saint Petersburg (Russia)--History--Siege, 1941-1944.
Working class--Russia (Federation)--Saint Petersburg
World War, 1939-1945--Economic aspects--Russia (Federation)--Saint Petersburg.
Princeton subject headings:
Labor policy--Russia (Federation)--Saint Petersburg.
Saint Petersburg (Russia)--History--Siege, 1941-1944.
Working class--Russia (Federation)--Saint Petersburg--History.