Columbia subject headings:
Harvard subject headings:
Industrial productivity--Russia (Federation)--Ural Mountains Region--History--20th century.
Ural Mountains Region (Russia)--History--20th century.
World War, 1939-1945--Russia (Federation)--Ural Mountains Region.
Princeton subject headings:
Industrial productivity--Russia (Federation)--Ural Mountains Region--History--20th century.
Ural Mountains Region (Russia)--History--20th century.
World War, 1939-1945--Russia (Federation)--Ural Mountains Region.