From a brief search I see that it isn't (or it least not yet), but seeing how well-formatted the pdf is, and the fact that it's CC-licensed, you could print it yourself, or perhaps talk with them to organize a batch.
Though I personally prefer to read these sorts of books directly from pdf, and am grateful to them for sharing it on arxiv.
Though I personally prefer to read these sorts of books directly from pdf, and am grateful to them for sharing it on arxiv.