The Magic Garden of George B and Other Logic Puzzles Autor Raymond Smullyan 28 mai 2015 Paperback Preț: 201.50 lei 6-8 săpt.
A Beginner's Further Guide to Mathematical Logic: A Goh Keng Swee Legacy Autor Raymond Smullyan 28 aug 2016 Paperback Preț: 169.74 lei 6-8 săpt.