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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) | |||
|
flood frequency : 3 צירופים, 1 נושאים |
| כללי | 3 |