| GMD | Text |
| Classification | 531.6 MAS |
| Publisher | Harlow [England], Pearson, 2009, c2006 |
| Subject | Juvenile literatureForce and energy -- Juvenile literature.Machinery -- Juvenile literature.Power resources -- Juvenile literature. |
| Series | Pearson baccalaureate PYP readers., Level 8., Non-fiction. |
| Description | 32 pages ; illustrations ; 24 cm. |
| ISBN | 9780435996451 |