Columbia subject headings:
Industries--Russia (Federation)--Ural Mountains Region--History--18th century.
Industries--Russia (Federation)--Ural Mountains Region--History--19th century.
Metallurgy--Russia (Federation)--Ural Mountains Region--History--18th century.
Metallurgy--Russia (Federation)--Ural Mountains Region--History--19th century.
Simbirskai︠a︡ gubernii︠a︡ (R.S.F.S.R.)--History.
Harvard subject headings:
Industries--Russia (Federation)--Ural Mountains Region--History--18th century.
Industries--Russia (Federation)--Ural Mountains Region--History--19th century.
Metallurgy--Russia (Federation)--Ural Mountains Region--History--18th century.
Metallurgy--Russia (Federation)--Ural Mountains Region--History--19th century.
Simbirskai͡a gubernii͡a (R.S.R.S.R.)--History.
Princeton subject headings:
Metallurgical plants--Russia (Federation)--Ural Mountains Region.