北海道大學工學部紀要 = Memoirs of the Faculty of Engineering, Hokkaido University;Vol.15 No.1
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Vol.15 No.1
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Acoustic Emission Activity in Bed Rock Surrounding Underground Working Faces in Deeplevel Coal Seams
Watanabe, Yoshiteru;Nakajima, Iwao
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http://hdl.handle.net/2115/37973
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