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| 地形 (chikei) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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feature form : 2 phrases, 1 sujets |
| Général | 2 |
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| 地形 (chikei) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
feature form : 2 phrases, 1 sujets |
| Général | 2 |