Columbia subject headings:
Harvard subject headings:
Demidov family.
Industries--Russia (Federation)--Ural Mountains Region--History--Sources.
Tatishchev family.
Ural Mountains Region (Russia)--History--Sources.
Princeton subject headings:
Industries--Russia (Federation)--Ural Mountains Region--History--Sources.
Mineral industries--Russia (Federation)--Ural Mountains Region--History--Sources.