Columbia subject headings:
Astronomy--Italy--History--16th century.
Fracastoro, Girolamo, 1478-1553--Criticism and interpretation.
Medicine--Italy--History--16th century.
Harvard subject headings:
Astrology--Italy--History--16th century.
Fracastoro, Girolamo, 1478-1553
Medicine--Italy--History--16th century.
Princeton subject headings:
Astronomy--Italy--History--16th century.
Fracastoro, Girolamo, 1478-1553.
Medicine--Italy--History--16th century.