| |||
| surface du second type | |||
| surface indirecte; surface secondaire | |||
|
secondary surface : 3 phrases in 3 subjects |
| Life sciences | 1 |
| Natural resourses and wildlife conservation | 1 |
| Transport | 1 |
| |||
| surface du second type | |||
| surface indirecte; surface secondaire | |||
|
secondary surface : 3 phrases in 3 subjects |
| Life sciences | 1 |
| Natural resourses and wildlife conservation | 1 |
| Transport | 1 |