Columbia subject headings:
Longevity--Finland--Congresses.
Longevity--Social aspects--Congresses.
Longevity--Soviet Union--Congresses.
Public health--Finland--Congresses.
Public health--Social aspects--Congresses.
Public health--Soviet Union--Congresses.
Harvard subject headings:
Longevity--Finland--Congresses.
Longevity--Social aspects--Congresses.
Longevity--Soviet Union--Congresses.
Public health--Finland--Congresses.
Public health--Social aspects--Congresses.
Public health--Soviet Union--Congresses.
Princeton subject headings:
Longevity--Finland--Congresses.
Longevity--Social aspects--Congresses.
Longevity--Soviet Union--Congresses.
Public health--Finland--Congresses.
Public health--Social aspects--Congresses.
Public health--Soviet Union--Congresses.