couche superficielle: 27 phrases in 11 subjects |
Agriculture | 1 |
Chemistry | 2 |
Construction | 2 |
Earth sciences | 1 |
General | 2 |
Immigration and citizenship | 1 |
Life sciences | 4 |
Materials science | 1 |
Medical | 2 |
Metallurgy | 8 |
Natural resourses and wildlife conservation | 3 |