Yoon-Sik Joo

Suggestion of the defect score and condition grading protocol about sewer pipe

Jungsoo Park, Yoon-Sik Joo, Guntae Son, 2017 .

Characteristic Features and Effect of Neo-Hydrofoil Impeller Applied in Sewage Treatment Plants

Seung Hwan Lee, Yoon-Sik Joo, Guntae Son, 2016 .