ISSN 2096-4498

   CN 44-1745/U

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Tunnel Construction ›› 2017, Vol. 37 ›› Issue (8): 1046-1048.

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LI ZHENG   

  1. China Railway Tunnel Stock Co., Ltd., Zhengzhou 450001, Henan, China
  • Online:2017-08-20 Published:2017-08-22