Columbia subject headings:
Archives--Russia (Federation)--Nizhegorodskai︠a︡ oblastʹ.
Nizhegorodskai︠a︡ oblastʹ (Russia)--Archival resources.
Nizhegorodskai︠a︡ oblastʹ (Russia)--History--Sources.
Harvard subject headings:
Princeton subject headings:
Archives--Russia (Federation)--Nizhegorodskai͡a oblastʹ.
Nizhegorodskai︠a︡ oblastʹ (Russia)--Archival resources.
Nizhegorodskai︠a︡ oblastʹ (Russia)--History--Sources.