| GMD | Text |
| Classification | 304.6 THO |
| Publisher | Harlow, , Pearson Education, 2009 |
| Subject | Juvenile literature |
| Series | Pearson baccalaureate PYP readers., Level 9,, Non-fiction. |
| Description | 32 pages : color illustrations, color charts ; 27 cm. |
| ISBN | 9780435996581 |
| Suitable | From 9 To 13 |