 |
| |||
| total sulphur | |||
| total sulfur (активная и неактивная) | |||
| общая сера: 5 phrases in 3 subjects |
| Ecology | 1 |
| General | 1 |
| Pulp and paper industry | 3 |
|
| |||
| total sulphur | |||
| total sulfur (активная и неактивная) | |||
| общая сера: 5 phrases in 3 subjects |
| Ecology | 1 |
| General | 1 |
| Pulp and paper industry | 3 |