Specification of Edmund Youldon : apparatus for ventilating chimneys.
- Youldon, Edmund.
- Date:
- 1854
Licence: Public Domain Mark
Credit: Specification of Edmund Youldon : apparatus for ventilating chimneys. Source: Wellcome Collection.
8/10 (page 4)
Licence: Public Domain Mark
Credit: Specification of Edmund Youldon : apparatus for ventilating chimneys. Source: Wellcome Collection.