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.
Julius Theodor Christian Ratzeburg. Julius Theodor Christian Ratzeburg German forestry scientist own scan from the book by Karl Escherich Leben und Forschen Kampf um eine Wissenschaft Berlin Author Public Domain PDold Julius Theodor Christian Ratzeburg
Page 2023 Free-images.com. All images are Public Domain