Grade Five Competition from the Leningrad Mathematical Olympiad Problem Books in Mathematics Autor Kseniya Garaschuk et al. 2 aug 2021 Paperback Preț: 369.35 lei 6-8 săpt.
The Puzzles of Nobuyuki Yoshigahara Problem Books in Mathematics Autor Andy Liu et al. 24 dec 2021 Paperback Preț: 369.85 lei 6-8 săpt.