 |
| |||
| synthetic material Material made artificially by chemical reaction | |||
|
abhar sinteiseach : 3 do fraz, 1 tematyki |
| Ochrona środowiska | 3 |
|
| |||
| synthetic material Material made artificially by chemical reaction | |||
|
abhar sinteiseach : 3 do fraz, 1 tematyki |
| Ochrona środowiska | 3 |