He has published the book on his website for free! You can click here to download it, or enjoy the book below. (you should download it, as the PDF images are way bigger).
It’s interesting that Kolb’s vision of the song is very different from mine. I’ve always seen Space Oddity as not a tragedy or the tale of a space accident but rather of an astronaut who, once he gets far beyond the Earth, has a shift in consciousness.