Not many of you will have heard of this one. I grabbed it off my shelf as I was leaving for somewhere or other, and I noted it was first published in 1979.
The short review is: it's good, and I thoroughly enjoyed it. The long review would have to babble about technology creep (the most advanced form of communication in 1979, it seems, was faxing), but if you can willingly suspend your technology knowledge and mentally cast yourself back to the 1970s, you'll find this a good, pacey, surprisingly modern book.
I doubt anyone will be able to find it, though. You'll just have to take my word for it.