Columbia subject headings:
Serfdom--Russia (Federation)--Tambovskai︠a︡ oblastʹ--History.
Social structure--Russia (Federation)--Tambovskai︠a︡ oblastʹ--History.
Tambovskai︠a︡ oblastʹ (Russia)--Social conditions.
Harvard subject headings:
Serfdom--Russia (Federation)--Tambovskai︠a︡ oblastʹ--History.
Social structure--Russia (Federation)--Tambovskai︠a︡ oblastʹ--History.
Tambovskai︠a︡ oblastʹ (Russia)--Social conditions.
Princeton subject headings:
Serfdom--Russia (Federation)--Tambovskai︠a︡ oblastʹ--History.
Social structure--Russia (Federation)--Tambovskai︠a︡ oblastʹ--History.
Tambovskai︠a︡ oblastʹ (Russia)--Social conditions.