Periodic variations in efficiency : as shown in mental and physical tests, together with some weather effects / by Archibald G. Peaks.
- Peaks, Archibald G. (Archibald Garfield), 1880-1918.
- Date:
- 1921
Licence: In copyright
Credit: Periodic variations in efficiency : as shown in mental and physical tests, together with some weather effects / by Archibald G. Peaks. Source: Wellcome Collection.
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