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栃木県
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NO.17 |
 大谷川床固群 Ver 1.0(2019.11) |
 A series Daiyagawa grandsels |
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 稲荷川第２砂防堰堤 |
 Inarigawa Sabo dam No.2 |
 足尾砂防堰堤 Ver 1.0(2020.3) |
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 方等上流砂防堰堤 Ver 1.0 |
 Houtou joryu Sabo dam Ver 1.0 |
 松木山腹工 Ver 1.0(2020.3) |
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