 |
| |||
| graphite synthétique; charbon de cornues; charbon artificiel | |||
| carbon gas: 9 phrases in 6 subjects |
| Chemistry | 2 |
| Environment | 2 |
| Medical | 1 |
| Metallurgy | 2 |
| Natural resourses and wildlife conservation | 1 |
| Transport | 1 |
|
| |||
| graphite synthétique; charbon de cornues; charbon artificiel | |||
| carbon gas: 9 phrases in 6 subjects |
| Chemistry | 2 |
| Environment | 2 |
| Medical | 1 |
| Metallurgy | 2 |
| Natural resourses and wildlife conservation | 1 |
| Transport | 1 |