Columbia subject headings:
Merchants--Russia (Federation)--Udmurtii︠a︡--History.
Udmurtii︠a︡ (Russia)--Commerce--History.
Harvard subject headings:
Merchants--Russia (Federation)--Udmurtii͡a--History--19th century.
Merchants--Russia (Federation)--Udmurtii͡a--History--20th century.
Merchants--Russia (Federation)--Udmurtii︠a︡--History.
Udmurtii︠a︡ (Russia)--Commerce--History--19th century.
Udmurtii︠a︡ (Russia)--Commerce--History--20th century.
Udmurtii︠a︡ (Russia)--Commerce--History.
Princeton subject headings:
Merchants--Russia (Federation)--Udmurtii︠a︡--History--19th century.
Merchants--Russia (Federation)--Udmurtii︠a︡--History--20th century.
Udmurtii︠a︡ (Russia)--Commerce--History--19th century.
Udmurtii︠a︡ (Russia)--Commerce--History--20th century.