| |||
dreistufig |
à trois étages: 15 phrases in 10 subjects |
Agriculture | 1 |
Animal husbandry | 1 |
Astronomy | 1 |
Chemistry | 1 |
Communications | 1 |
Construction | 1 |
Environment | 1 |
High energy physics | 4 |
Mechanic engineering | 3 |
Natural resourses and wildlife conservation | 1 |