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Hiroki MATSUSHITA
Civil Engineering Research Institute for Cold Region
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*Hiroyuki YOKOYAMA
Civil Engineering Research Institute for Cold Region
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Masaru MATSUZAWA
Civil Engineering Research Institute for Cold Region
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Kohji FUSE
Civil Engineering Research Institute for Cold Region
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Masayo UEDA
Civil Engineering Research Institute for Cold Region
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Yasuhiko KAJIYA
Civil Engineering Research Institute for Cold Region