Columbia subject headings:
Astrology--History--Congresses.
Medical astrology--History--Congresses.
Medicine--History--Congresses.
Harvard subject headings:
Astrology--History--Congresses.
Medical astrology--History--Congresses.
Medicine--History--Congresses
Princeton subject headings:
Astrology--History--Congresses.
Medical astrology--History--Congresses.
Medicine--History--Congresses.