| Other Title | key to the universe, The |
| GMD | Book |
| Language | E |
| Classification | MAT |
| Publisher | Scholastic,, London :, 2009 |
| Subject | Mathematicsshapetrianglenumbers |
| Topic | Mathematicsshapetrianglenumbers |
| Series | Murderous Maths# |
| Description | 160 p. :;ill. ;20 cm.; |
| ISBN | 9781407107110 |