I just picked this up a couple of weeks ago: http://www.amazon.com/Programming-Artificial-Intelligence-International-Computer/dp/0321417461/ref=sr_1_1?s=books&

I just picked this up a couple of weeks ago: http://www.amazon.com/Programming-Artificial-Intelligence-International-Computer/dp/0321417461/ref=sr_1_1?s=books&ie=UTF8&qid=1408026910&sr=1-1&keywords=prolog+programming+for+artificial+intelligence+4th+edition http://www.amazon.com/Programming-Artificial-Intelligence-In... Came highly recommended by David Nolen on his blog. Appears to have a good section on CLP. EDIT: And completely agree with you on "The Art of Prolog", I have that too and have read most of it. Need to get back to finishing that up some day ;)