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留设窄煤柱维护大巷技术

  • Release time:2021-09-28
  • Hits:
  • Affiliation of Author(s): 

    矿业工程学院
  • First Author: 

    Ma Liqiang
  • Indexed by: 

    Journal paper
  • Document Code: 

    paper_61553
  • Translation or Not: 

    no
  • Date of Publication: 

    2009-01-01