Thank you!

Over the years, a lot of people have contributed to Learn Prolog Now! in one way or another:

Gertjan van Noord and Robbert Prins used early versions of LPN! in their teaching at the University of Groningen. They gave us detailed feedback which really helped us improve the accuracy of the text.
Malvina Nissim supplied us with an upgrade of Exercise 2.4 and gave us a lot of help and advice regarding the final hardcopy version.
Dov Gabbay founded College Publications and thereby made it possible for us to publish LPN! on paper as well as online. And thanks to Vincent Hendricks for telling us about it.
Jane Spurr, the managing director of College publications gave us lots of time and attention in the final run-up to publication. She was always there for us and reacted promptly to the invariable last minute problems. Thank you Jane.
Jan Wielemaker made SWI Prolog freely available over the internet and gave us speedy and informative feedback on a number of technical issues.
Ian Mackie and an anonymous referee put a lot of time and energy into the penultimate version of the (printed) book.
Bart Demoen wrote a very thorough review of our book for the journal "Theory and Practice of Logic Programming", which brought up many good points that will help us improve LPN! for the next edition.
Peter Urbak, Richard Kenyon, Matt Braithwaite, Anas Elghafari, Shannon "JJ" Behrens, Alejandro Marín Buriticá, Gabriele Medeot, Danny Rademacher, Ali Almiman sent us useful corrections that are incorporated in the free online version!
And a big thank you to Hélène Manuélian who took on the task of translating LPN into french and did it so beautifully!