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| 負鉄筋 (ふてっきん) River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 負の強化 Life Science Dictionary (Shuji Kaneko) | |||
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| 負鉄筋 (ふてっきん) | |||
| |||
| 負鉄筋 (ふてっきん) River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 負の強化 Life Science Dictionary (Shuji Kaneko) | |||
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| 負鉄筋 (ふてっきん) | |||
