Columbia subject headings:
Harvard subject headings:
Finland--Boundaries--Russia (Federation)
Finland--Relations--Russia.
Finland--Relations--Soviet Union.
Karelia (Russia)--Historical geography.
Russia (Federation)--Boundaries--Finland.
Russia--Relations--Finland.
Soviet Union--Relations--Finland.
Princeton subject headings:
Finland--Boundaries--Russia (Federation).
Finland--Relations--Russia.
Finland--Relations--Soviet Union.
Russia (Federation)--Boundaries--Finland.
Russia--Relations--Finland.
Soviet Union--Relations--Finland.