| |||
| extraction of terms | |||
|
Extraktionsmethode : 2 phrases in 2 subjects |
| Coal | 1 |
| Natural resourses and wildlife conservation | 1 |
| |||
| extraction of terms | |||
|
Extraktionsmethode : 2 phrases in 2 subjects |
| Coal | 1 |
| Natural resourses and wildlife conservation | 1 |