Yes. I owned it during the 90th. The only problem is, that it is in German. Over at archive.org I only found torrent images for the enclosed CD-ROM, which features source code as well as a couple of great demos from Iguana, Dust, Surprise and others.
Yay! One of the unexpected benefits of releasing a lot of source code for our work back then, is that we can now find it again on the internet [1] - most of it would have been (and was) lost otherwise :)
Write to the Archive.org folks, perhaps? These two items are clearly both up there somewhere, and they need to be linked together as being part of a single release. The issue of books/publications with enclosed media (floppies, CD) is also quite general, well beyond that one case.
