|
obstruccion : 72 phrases in 19 subjects |
| Agriculture | 2 |
| Antennas and waveguides | 2 |
| Automobiles | 1 |
| Chemistry | 1 |
| Communications | 1 |
| Earth sciences | 5 |
| Environment | 1 |
| Fish farming pisciculture | 1 |
| General | 8 |
| Health care | 2 |
| Law | 2 |
| Materials science | 1 |
| Medical | 23 |
| Metallurgy | 1 |
| Natural sciences | 1 |
| Technology | 10 |
| Transport | 5 |
| Veterinary medicine | 3 |
| Water resources | 2 |