Acta Geodaetica et Cartographica Sinica ›› 2019, Vol. 48 ›› Issue (4): 532-532.doi: 10.11947/j.AGCS.2019.20180225

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Research on the safety evaluation and key technologies for the expressway construction on old goaf of coal mine

GUO Qingbiao   

  1. Anhui University of Science & Technology, Huainan 232001, China
  • Received:2018-05-21 Online:2019-04-20 Published:2019-05-15

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