| |||
| химическое исследование | |||
|
chemical study : 7 phrases in 3 subjects |
| Firefighting and fire-control systems | 1 |
| Makarov | 5 |
| Research and development | 1 |
| |||
| химическое исследование | |||
|
chemical study : 7 phrases in 3 subjects |
| Firefighting and fire-control systems | 1 |
| Makarov | 5 |
| Research and development | 1 |