File:Peter scharmann formel2 1978.jpg

Summary
"Peter scharmann formel2 1978" by Sigrid Scharmann - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Peter_scharmann_formel2_1978.jpg#/media/File:Peter_scharmann_formel2_1978.jpg