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Hebei Coal
1007-1083
2008 Issue 1
Discussion on strengthening the coal enterprise internal control
ZHANG Chang-jing
..............page:57-58
Selection and application of the leakage protective device
GUO Tian-bing
..............page:33-34
Research on PR-12 type drift level vehicle reporting and warning device and its application
GUO ji-zheng;LI Chun-dong;JING Guang-hua
..............page:14-15