Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Bui’s Maths Book, in two volumes covers a wide range: the invention of numbers, geometry, groups, probability, calculus etc. showing how simple sets of axioms quickly lead to thought-provoking results.