 |
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| 一級河川 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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| 一級河川 | |||
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| —級河川 (いっきゅう・かせん) | |||
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Class A rivers : 1 phrases, 1 sujets |
| Général | 1 |
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| |||
| 一級河川 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| |||
| 一級河川 | |||
| |||
| —級河川 (いっきゅう・かせん) | |||
|
Class A rivers : 1 phrases, 1 sujets |
| Général | 1 |