Is the efficacy of cow-pox in preventing small-pox the same now as thirty years ago?.

  • Elliot, William, of Carlisle.
Date:
1836
Catalogue details

Licence: Public Domain Mark

Credit: Is the efficacy of cow-pox in preventing small-pox the same now as thirty years ago?. Source: Wellcome Collection.

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    Digitized by the Internet Archive in 2018 with funding from Wellcome Library https://archive.org/details/b30388697