 |
| |||
| material activo | |||
| masa activa; masa efectiva | |||
|
active mass : 5 do fraz, 4 tematyki |
| Akumulatory | 1 |
| Hutnictwo | 1 |
| Magnetyzm | 1 |
| Nauka o ziemi | 2 |
|
| |||
| material activo | |||
| masa activa; masa efectiva | |||
|
active mass : 5 do fraz, 4 tematyki |
| Akumulatory | 1 |
| Hutnictwo | 1 |
| Magnetyzm | 1 |
| Nauka o ziemi | 2 |