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| self-purification A natural process of organic degradation that produces nutrients utilized by autotrophic organisms; self-purification | |||
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autoepuration : 4 do fraz, 2 tematyki |
| Budownictwo | 1 |
| Ochrona środowiska | 3 |
|
| |||
| self-purification A natural process of organic degradation that produces nutrients utilized by autotrophic organisms; self-purification | |||
|
autoepuration : 4 do fraz, 2 tematyki |
| Budownictwo | 1 |
| Ochrona środowiska | 3 |