I bought a copy at a mall in Nashville TN some 30+ years ago. I was working at an airline at the time and was interested in the crew scheduling problem, as well as all things AI related. I never got too far using Prolog on that particular problem. I found the disks and manual like 13 years ago and made a short video and put it on youtube. Turbo Prolog was pretty speedy even on old hardware.
https://www.youtube.com/watch?v=svcxu0xiH34 Win
