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.
8/10 (page 6)
Licence: Public Domain Mark
Credit: Specification of George Harman Barth : inhaling apparatus. Source: Wellcome Collection.