Gunther Radtke's Nuclear Ferry

I recently saw this beautiful artwork from 1974 by Gunther Radtke on Flickr [X Ray Delta One]. Radtke is a German artist I'm not familiar with. The illustration is from an unknown German publication [anyone recognise it?] and describes the space station as a 'space factory for 400 personel'.  The perspective of the space station is beguiling and the two spacecraft echo the design of our friend the front cab of the Nuclear ferry pictured below from a story in TV21 comic.