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Some Studies in the Field of Coal. Preparation Technology on Local Characteristics in Yubari Seam(I)

Takeshi Takakuwa, Ryazo Oyama
1952 Journal of the Fuel Society of Japan  

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doi:10.3775/jie.31.550 fatcat:likleksnbveu3ioiqvup4rdlpy
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Takeshi Takakuwa, Ryazo Oyama. "Some Studies in the Field of Coal. Preparation Technology on Local Characteristics in Yubari Seam(I)." Journal of the Fuel Society of Japan 31.12 (1952) 550-553