The mystery of mind / by Leonard T. Troland.
- Troland, Leonard T. (Leonard Thompson), 1889-1932.
- Date:
- 1926
Licence: In copyright
Credit: The mystery of mind / by Leonard T. Troland. Source: Wellcome Collection.
38/282 (page 18)
Licence: In copyright
Credit: The mystery of mind / by Leonard T. Troland. Source: Wellcome Collection.