Alice in Puzzle-LandGreer Fitting, Raymond M. Smullyan og 1 annenPocketEngelskLegg i handlekurvNettlager
Entertaining Mathematical PuzzlesAnthony Ravielli, Martin GardnerPocketEngelskLegg i handlekurvNettlager
Pensum -10%Threatened Plants of Central and South ChileMartin GardnerPocketEngelskLegg i handlekurvNettlager
The Colossal Book of Short Puzzles and ProblemsMartin Gardner, Dana RichardsInnbundetEngelskLegg i handlekurvNettlager
Pensum -10%Codes, Ciphers and Secret WritingMartin GardnerPocketEngelskDel av serien Dover Children's Activity BooksLegg i handlekurvNettlager
