Specification of George Harman Barth : inhaling apparatus.
- Barth, George Harman.
- Date:
- 1869
Licence: Public Domain Mark
Credit: Specification of George Harman Barth : inhaling apparatus. Source: Wellcome Collection.
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Licence: Public Domain Mark
Credit: Specification of George Harman Barth : inhaling apparatus. Source: Wellcome Collection.