 |
| |||
| полисульфид | |||
| персульфид (a sulphide containing more sulphur than some other compound of the same elements) | |||
| persulphide: 11 do fraz, 2 tematyki |
| Chemia | 10 |
| Ropa / ropa naftowa | 1 |
|
| |||
| полисульфид | |||
| персульфид (a sulphide containing more sulphur than some other compound of the same elements) | |||
| persulphide: 11 do fraz, 2 tematyki |
| Chemia | 10 |
| Ropa / ropa naftowa | 1 |