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| 自然流入 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 自然流量 (しぜんりゅうりょう) River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 自流 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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natural flow : 2 do fraz, 1 tematyki |
| Pospolicie | 2 |