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| 洪水頻度 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 洪水度数 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 冠水頻度 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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flood frequency : 3 do fraz, 1 tematyki |
| Pospolicie | 3 |