parafulmine:lesfoudres:(via Crisis in maths - Page 5)The First Six Books of the Elements of Euclid (
parafulmine:lesfoudres:(via Crisis in maths - Page 5)The First Six Books of the Elements of Euclid (English) - 1847 - Euclid, (author Byrne, Oliver - London - The Warnock Librarythe equilateral onedoni del mattino -- source link