 |
| |||
| reinforcement | |||
| strengthening | |||
| enrichment; fortification | |||
| |||
| fortifications | |||
|
Fortifications : 23 a las frases, 10 temas |
| Construcción | 3 |
| Estudios culturales | 1 |
| General | 8 |
| Industria | 1 |
| Medicina | 1 |
| Metalurgia | 1 |
| Patentes | 2 |
| Servicio de alimentación y catering | 2 |
| Tecnología | 3 |
| Transporte | 1 |