| GMD | Text |
| Classification | 004 G76 |
| Publisher | London, Horus Editions, c1998 |
| Subject | Computers -- Juvenile literature.Computers.Telecommunication -- Juvenile literature.Telecommunication. |
| Topic | Grade 4-5 Reading (740L-1010L) |
| Series | How it works. |
| Description | 44, [2] p. : col. ill. ; 31 cm. |
| ISBN | 9781899762477 |