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(日本語) 朝日小川ダム河川総合交付金法面補修工事朝日小川ダム河川総合交付金法面補修工事
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Natural Environment Maintenance, Keyakidaira Area Maintenance Work
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Birudann (1) Slope Protection (Steep Slope) Erosion Control, Construction
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Birudani Regional Erosion Control( Steep Slope) Construction
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Rinndou Betumata Soga Takesen Slope Protection Construction
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Rinndou Betumata Soga Takesen Slope Construction( Part 3 and Part 4)
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Matuodani (Material Transportation Road) Restoration Afforestation Construction
