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| 二級河川 (にきゅう・かせん) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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| 二級河川 (にきゅう・かせん) | |||
|
Class B rivers : 1 phrase in 1 subject |
| General | 1 |
| |||
| 二級河川 (にきゅう・かせん) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| |||
| 二級河川 (にきゅう・かせん) | |||
|
Class B rivers : 1 phrase in 1 subject |
| General | 1 |