| reference material | |
| chem. tech. | materiale di riferimento |
|
isotopic : 56 phrases in 11 subjects |
| Chemistry | 4 |
| Earth sciences | 13 |
| Electronics | 1 |
| General | 8 |
| Measuring instruments | 11 |
| Medical | 2 |
| Medical appliances | 1 |
| Natural sciences | 2 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 1 |
| Physical sciences | 12 |