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| 方向観測法 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 方向法 (ほうこうほう) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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direction method : 4 צירופים, 2 נושאים |
| טֶכנוֹלוֹגִיָה | 2 |
| כללי | 2 |