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.
Constantin Grewingk. Constantin Grewingk ester ee bS est ajaloomuuseum Louis Hofflinger ca PDold Geologists from Estonia University of Tartu faculty Louis Hflinger births deaths
Page 2023 Free-images.com. All images are Public Domain