File:BogdanovBelsky UstnySchet.jpg
Formula on the blackboard:
Signature and date bottom right:
References
Tretyakov Gallery
Source/Photographer
1. history.sgu.ru
2. booksite.ru
3. eldibujante.com
Other versions
Signature and date bottom right:
НБогдановъ-Бѣльскі / 1895 г
2. booksite.ru
3. eldibujante.com
Licensing
This is a faithful photographic reproduction of a two-dimensional, public domain work of art. The work of art itself is in the public domain for the following reason:
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This photographic reproduction is therefore also considered to be in the public domain in the United States. In other jurisdictions, re-use of this content may be restricted; see Reuse of PD-Art photographs for details. |