 |
| regeneración: 88 phrases in 19 subjects |
| Agriculture | 12 |
| Chemistry | 2 |
| Coal | 2 |
| Communications | 3 |
| Earth sciences | 2 |
| Electronics | 11 |
| Environment | 20 |
| Forestry | 9 |
| Industry | 7 |
| Information technology | 5 |
| Life sciences | 1 |
| Materials science | 1 |
| Medical | 2 |
| Metallurgy | 2 |
| Patents | 1 |
| Power lines | 1 |
| Radio | 2 |
| Social science | 4 |
| Transport | 1 |