Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
On the relation of cow-pox and horse-pox to small-pox. : A thesis read for the degree of M.D. Cantab / by Robert Cory. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.