Premining Engineering-Geological Investigations for the Longwall[J]. COAL GEOLOGY & EXPLORATION, 1988, 16(5): 37-42.
Citation:
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Premining Engineering-Geological Investigations for the Longwall[J]. COAL GEOLOGY & EXPLORATION, 1988, 16(5): 37-42.
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Premining Engineering-Geological Investigations for the Longwall[J]. COAL GEOLOGY & EXPLORATION, 1988, 16(5): 37-42.
Citation:
|
Premining Engineering-Geological Investigations for the Longwall[J]. COAL GEOLOGY & EXPLORATION, 1988, 16(5): 37-42.
|