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The third world natives need washboard when they go to do laundry with wash tube, which solve thier problem of doing laundry.
Cheongju Univ.
Cheongju, South Korea
KIDP (Joongbu branch)
Korea Institute of Design Promotion
Daejeon, South Korea
Sihyun Jeong
Seobin Oh
Yuhyeon Jun
Gahye Shim
