The psychology of sound / by Henry J. Watt.
- Watt, Henry J. (Henry Jackson), 1879-1925.
- Date:
- 1917
Licence: In copyright
Credit: The psychology of sound / by Henry J. Watt. Source: Wellcome Collection.
42/260 (page 30)
Licence: In copyright
Credit: The psychology of sound / by Henry J. Watt. Source: Wellcome Collection.