Bildnachweis
Old winding tower coal mine. Bochum, Germany.
Von Sebastian
handshake business partners at a meeting
Von ASDF
Closeup business people hands typing on keyboard computer desktop for using internet, searching data, working, writing email.
Von Nattakorn
Cityscape of Bochum with modern skyscraper, Germany
Von amelie
Titelbild: Thomas Zehnter
