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METHOD OF DETERMINING THE DEGREE OF METAMORPHISM OF COAL AND COAL INCLUSIONS
METHOD OF DETERMINING THE DEGREE OF METAMORPHISM OF COAL AND COAL INCLUSIONS
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机译:确定煤和煤夹杂物变质程度的方法
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method of determining the метаморфизма угляи углистых вклочений, including sampling, the registration and the nature of changes of physical parameters of личающийс whatin order to повышени credibili
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