About INAGAKI KATSUNOBU
About 大阪市 建設局
About 下水道協会誌
About combined sewerage
About improvement
About sewer pipe
About Osaka prefecture
About overflow (dam)
About shield tunneling
About facility and building
About rain water storage tube
About rainwater storage facility
About stormwater overflow
About improvement of combined sewer
About Osaka City
About slurry shield method
About Sewerage,sewers attached facilities
About 合流改善
About 建設
About 維持管理
About 大規模
About 貯留管
About 合流式下水道改善