John Phin
The Seven Follies of Science [2nd ed.] A popular account of the most famous scientific impossibilities and the attempts which have been made to solve them. To which is added a small budget of interesting paradoxes, illusions, and marvels
John Phin · 2011
ספרייה ציבורית, Project Gutenberg. בלי הרשמה.
Geometry -- Famous problemsScientific recreations