Columbia subject headings:
Ri︠a︡zanskai︠a︡ oblastʹ (Russia)--History.
Russia--History.
Harvard subject headings:
Ri︠a︡zanskai︠a︡ oblastʹ (Russia)--Biography.
Ri︠a︡zanskai︠a︡ oblastʹ (Russia)--History.
Princeton subject headings: