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.
Keywords from Image Description:
Ratzeburg Waldverderbniss . en Cover scan from the book by Julius Theodor Christian Ratzeburg Die Waldverderbniss oder dauernder Schade welcher durch Insektenfrass Schlen Schlagen und Verbeissen an lebenden Waldbumen entsteht Volume Nicolaische Verlagsbuchhandlung Berlin de Scan des Einbands des Buchs von Julius Theodor Christian