 |
| regeneración: 111 phrases in 18 subjects |
| Agriculture | 11 |
| Chemistry | 3 |
| Coal | 1 |
| Communications | 2 |
| Earth sciences | 3 |
| Electronics | 14 |
| Environment | 32 |
| Forestry | 6 |
| General | 2 |
| Industry | 11 |
| Information technology | 5 |
| Life sciences | 1 |
| Materials science | 1 |
| Mechanic engineering | 1 |
| Medical | 11 |
| Metallurgy | 3 |
| Nuclear physics | 2 |
| Transport | 2 |