| Other Title | Our world encyclopedia Volume 6 Travel and communication |
| GMD | Book |
| Language | E |
| Classification | 030 OUR |
| Publisher | Macmillan Education Limited of London, London, 1975 |
| Subject | General interest |
| Topic | General interest |
| Series | Our world# |
| Description | 482 - 575 p. ;25 cm.; |