Columbia subject headings:
Harvard subject headings:
Medical care--Germany (West)--History--Congresses.
Medical care--Hungary--History--Congresses.
Medical care--Switzerland--History--Congresses.
Urban health--Germany (West)--History--Congresses.
Urban health--Hungary--History--Congresses.
Urban health--Switzerland--History--Congresses.
Princeton subject headings:
Medicine--Europe, Central--History--Congresses.
Urban health--Europe, Central--History--Congresses.