 |
| fire fighting installation: 6 phrases in 4 subjects |
| Ecology | 3 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Public utilities | 1 |
|
| fire fighting installation: 6 phrases in 4 subjects |
| Ecology | 3 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Public utilities | 1 |