浅谈密山矿区急倾斜煤层采区巷道布置与支护
Publisher： 国家哲学社会科学学术期刊数据库
E-ISSN： 1674-8646|8|4|116-117
ISSN： 1674-8646
Source： 黑龙江科学, Vol.8, Iss.4, 2017-01, pp. : 116-117
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Abstract