CHEN Qi
College of Geoscience and Surveying Engineering, China University of Mining & Technology(Beijing), 100083 Beijing,China/College of Engineering and Technology, China University of Geosciences (Beijing), 100083 Beijing, ChinaSUN Wenjie
College of Geoscience and Surveying Engineering, China University of Mining & Technology(Beijing), 100083 Beijing,ChinaXI Sha
College of Engineering and Technology, China University of Geosciences (Beijing), 100083 Beijing, ChinaCHEN Qi, SUN Wenjie, XI Sha.2013. Graded Classification of Mine Environment Geological Problems[J]. Acta Geologica Sinica(),87(z1):627
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