 |
| undisturbed samples: 7 phrases in 5 subjects |
| Construction | 1 |
| Electrical engineering | 1 |
| Electronics | 1 |
| Natural resourses and wildlife conservation | 3 |
| Oil / petroleum | 1 |
|
| undisturbed samples: 7 phrases in 5 subjects |
| Construction | 1 |
| Electrical engineering | 1 |
| Electronics | 1 |
| Natural resourses and wildlife conservation | 3 |
| Oil / petroleum | 1 |