 |
|
diffuseurs : 55 phrases in 16 subjects |
| Agriculture | 5 |
| Chemistry | 1 |
| Communications | 5 |
| Earth sciences | 8 |
| Energy industry | 1 |
| Finances | 1 |
| Health care | 4 |
| Industry | 2 |
| Lighting other than cinema | 2 |
| Materials science | 2 |
| Mechanic engineering | 10 |
| Municipal planning | 3 |
| Patents | 1 |
| Physical sciences | 1 |
| Telegraphy | 1 |
| Transport | 8 |