| GMD | Text |
| Classification | 670 BUL |
| Publisher | Hong Kong, Educational Publishing House Limited, 2011 |
| Subject | Electric machinery.Readers (Primary) |
| Topic | Grade 4-5 Reading (740L-1010L) |
| Series | Pop readers#Level 4 |
| Description | 24 p. : col. ill. ; 24 cm. |
| ISBN | 9789621283849 |