Specification of John Graefer : preserving vegetable substances.
- Graefer, John, -1802.
- Date:
- 1855
Licence: Public Domain Mark
Credit: Specification of John Graefer : preserving vegetable substances. Source: Wellcome Collection.
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Licence: Public Domain Mark
Credit: Specification of John Graefer : preserving vegetable substances. Source: Wellcome Collection.