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.
Scherk. Bild von Heinrich Ferdinand Scherk mathematik unihalle de html author PDold Education in Germany People of Kiel History of astronomy Mathematicians from Germany deaths People of Halle Saale births Astronomers from Germany Black and white photographic portraits of men People with bow ties
Page 2023 Free-images.com. All images are Public Domain