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:
Uebersicht ber das TertirBecken des NiederRheines BHL. Uebersicht ber das TertirBecken des NiederRheines von Ad Gurlt Foldout biodiversitylibrary org title Gurlt Adolf Biodiversity Heritage Library PDold Uebersicht ber das TertirBecken des NiederRheines Images uploaded by Files from the Biodiversity Heritage Library