|
visual check : 6 phrases in 6 subjects |
| Apollo-Soyuz | 1 |
| Economics | 1 |
| Makarov | 1 |
| Non-destructive testing | 1 |
| Public utilities | 1 |
| Quality control and standards | 1 |
|
visual check : 6 phrases in 6 subjects |
| Apollo-Soyuz | 1 |
| Economics | 1 |
| Makarov | 1 |
| Non-destructive testing | 1 |
| Public utilities | 1 |
| Quality control and standards | 1 |