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.
Mendeleiev. Photographie d'un tableau accroch au mur de l'Institut Mendeleev StPetersbourg Russie l'arrire plan ayant supprim avec Photoshop own assumed Foxtrotcommons Dmitri Mendeleev
Page 2023 Free-images.com. All images are Public Domain