A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL. The file type is application/pdf.
application/pdf
建军 李, 晓斌 王. "煤矿安全管理存在的问题及其防控措施研究." 地矿测绘 2.6 (2019)