Columbia subject headings:
Medicine--Philosophy--History--16th century.
Paracelsus, 1493-1541.
Severinus, Petrus, 1542-1602.
Harvard subject headings:
Medicine--Philosophy--History--16th century.
Paracelsus, 1493-1541.
Severinus, Petrus, 1542-1602.
Princeton subject headings:
Medicine--Philosophy--History--16th century.
Paracelsus, 1493-1541.
Severinus, Petrus, 1542-1602.