Dialogo di Galileo Galilei ... : doue ne i congressi di quattro giornate si discorre sopra i due massimi sistemi del mondo Tolemaico e Copernicano ...

Mode of access: Internet.

An inquiry into the causes and effects of the variolae vaccinae : a disease discovered in some of the western counties of England, particularly Gloucestershire, and known by the name of the Cow Pox /

Mode of access: Internet.