1 |  | The world book of math power. volume 2, Using math . - Chicago : World book, 1993. - 848 p. ; 24 cm Thông tin xếp giá: : L162QCA000237 |
2 |  | The world book of math power. Volume 1, Learning math . - Chicago : World book, 1993. - 576 p. ; 24 cm Thông tin xếp giá: : L162QCA000236 |