FRACTURING EFFECT OF DEEP COAL RESERVOIR IN ZHENGZHUANG WELL FIELD, JINCHENG MINE DISTRICT 
ZHAO Xiaoshan, ZHANG Kun, LI Jiangbiao, et al
Resources & Industries . 2018, (4): 13 -17 .  DOI: 10.13776/j.cnki.resourcesindustries.20180808.001

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