Keywords: Marcellus cornarius tp.jpg Marcellus De medicamentis ed princeps title page http //www mdz-nbn-resolving de/urn/resolver pl urn urn nbn de bvb 12-bsb10140814-1 1536 publisher Frobenius 1536 PD-old Janus Cornarius 1536 books Marcellus Empiricus |