Columbia subject headings:
Harvard subject headings:
Names, Geographical--Russia (Federation)--Leningradskai͡a oblastʹ.
Names, Geographical--Russia (Federation)--Novgorodskai͡a oblastʹ.
Names, Geographical--Russia (Federation)--Pskovskai͡a oblastʹ.
Princeton subject headings:
Names, Geographical--Russia (Federation)--Leningradskai︠a︡ oblastʹ.
Names, Geographical--Russia (Federation)--Novgorodskai︠a︡ oblastʹ.
Names, Geographical--Russia (Federation)--Pskovskai︠a︡ oblastʹ.