 |
| |||
| 电话簿 | |||
| 国际电讯信号本 | |||
| 电报密码簿; 电码簿 | |||
| 代码本; 密码本 | |||
| 编码本 | |||
| 密码书 | |||
| 译码本; 代码簿 | |||
| 电码本; 信号簿; 密本 | |||
| 编码簿; 国际电讯信号 | |||
| |||
| 电报简码书 | |||
|
code book : 11 phrases in 8 subjects |
| Electronic commerce | 1 |
| Electronics | 1 |
| Information technology | 1 |
| Multimedia | 1 |
| Rowing | 2 |
| Sports | 2 |
| Technology | 2 |
| Telecommunications | 1 |