Columbia subject headings:
Ri︠a︡zanskai︠a︡ oblastʹ (Russia)--History--Sources.
Harvard subject headings:
Ri︠a︡zanskai︠a︡ oblastʹ (Russia)--History--Sources.
Princeton subject headings:
Cadastres--Russia (Federation)--Ri︠a︡zanskai︠a︡ oblastʹ.
Land tenure--Russia (Federation)--Ri︠a︡zanskai︠a︡ oblastʹ--History--Sources.
Ri︠a︡zanskai︠a︡ oblastʹ (Russia)--History--Sources.