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Nobutomo OSANAI
Shikoku Mountainous Region Sabo Work Office, Ministry of Construction [in Japanese]
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Noriyuki MINAMI
Erosion and Sediment Control Division, Public Works Research Inst., Ministry of Construction
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Shinji TAKESAKI
Erosion and Sediment Control Division, Public Works Research Inst., Ministry of Construction
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Fujika KOBAYASHI
Asia Air Survey Co., Ltd.
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Yoshio TOJU
Sabo Frontier Foundation [in Japanese]