Columbia subject headings:
Europe--Economic conditions.
Public health--Economic aspects--Europe.
Public health--Social aspects--Europe.
Public welfare--Europe.
Harvard subject headings:
Economic development--Congresses
Public health--Economic aspects--Europe--Congresses.
Public health--Social aspects--Europe--Congresses.
Public welfare--Europe--Congresses.
Princeton subject headings:
Economic development--Congresses.
Public health--Economic aspects--Europe--Congresses.
Public health--Social aspects--Europe--Congresses.
Public welfare--Europe--Congresses.