File:Константин Сотонин ок. 1926 г.png
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| Description |
Русский: Фотография К.И. Сотонина из сборника «Казанский институт НОТ. Пять лет работы. 1921 - 1926.» — Казань, 1926.
Описание из книги: «Психотехническая лаборатория. Ртутный хроноскоп конструкции К.И. Сотонина (справа автор).» |
| Date | |
| Source | Казанский институт НОТ. Пять лет работы. 1921 - 1926. |
| Author | Казанский институт научной организации труда |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 21:01, 5 February 2022 | | 948 × 1,002 (1.39 MB) | Timofei Anufriev (talk | contribs) | Uploaded a work by Казанский институт научной организации труда from Казанский институт НОТ. Пять лет работы. 1921 - 1926. with UploadWizard |
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