 |
| |||
| zero level; datum | |||
| initial levelling | |||
|
вихідний рівень : 7 phrases in 4 subjects |
| Economy | 1 |
| Information technology | 2 |
| Microelectronics | 2 |
| Military | 2 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips