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.
Chem. Fabrik K. Oehler . NaphtolChemie Offenbach der Chemischen Fabrik GriesheimElektron bis Oehler Anilin und Anilinfarbenfabrik hessischeswirtschaftsarchiv de pdf Friedrich Schoembs Offenbach PDold AllessaChemieHafen OffenbachBrgel
Page 2023 Free-images.com. All images are Public Domain