 |
| |||
| stille periode | |||
| baja de actividad: 16 phrases in 7 subjects |
| Chemistry | 1 |
| Communications | 1 |
| Earth sciences | 3 |
| Environment | 5 |
| General | 2 |
| Measuring instruments | 1 |
| Nuclear physics | 3 |
|
| |||
| stille periode | |||
| baja de actividad: 16 phrases in 7 subjects |
| Chemistry | 1 |
| Communications | 1 |
| Earth sciences | 3 |
| Environment | 5 |
| General | 2 |
| Measuring instruments | 1 |
| Nuclear physics | 3 |