Specification of Francis Fearon : softening or deadening sound.
- Fearon, Francis.
- Date:
- 1865
Licence: Public Domain Mark
Credit: Specification of Francis Fearon : softening or deadening sound. Source: Wellcome Collection.
7/8 (page 5)
Licence: Public Domain Mark
Credit: Specification of Francis Fearon : softening or deadening sound. Source: Wellcome Collection.