 |
| |||
| Tracer-Methode m | |||
| tracing method: 3 phrases in 3 subjects |
| Communications | 1 |
| Health care | 1 |
| Natural resourses and wildlife conservation | 1 |
|
| |||
| Tracer-Methode m | |||
| tracing method: 3 phrases in 3 subjects |
| Communications | 1 |
| Health care | 1 |
| Natural resourses and wildlife conservation | 1 |