煤田地质的煤层特征与煤层系统观察

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1674-8646|7|14|16-17

ISSN: 1674-8646

Source: 黑龙江科学, Vol.7, Iss.14, 2016-01, pp. : 16-17

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Abstract