Neue Untersuchungen zur Pocken- und Impf-Frage / von H. Böing.

Licence: Public Domain Mark

Credit: Neue Untersuchungen zur Pocken- und Impf-Frage / von H. Böing. 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.