Pig powders : an invaluable remedy for keeping pigs free from disease, more especially from swine fever : Directions. One powder to be given every few weeks.

Date:
[between 1890 and 1899?]

Licence: Public Domain Mark

Credit: Pig powders : an invaluable remedy for keeping pigs free from disease, more especially from swine fever : Directions. One powder to be given every few weeks. Source: Wellcome Collection.

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