This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Frantisek Hromadko Narodni album. Frantiek Hromdko Czech mathematician and physicist nkp cz Nrodn album digitized by the Czech National Library anonymous other versions Custom marker AnonymousEU Uploaded with Mathematicians from the Czech Republic Physicists from the Czech Republic Nrodn album
Page 2023 Free-images.com. All images are Public Domain