Hua Xinzhu. THE FIXING METHOD OF PILLAR RESISTANCE FORCE ON THE TOP COAL WORKING FACEJ. CHINA MINING MAGAZINE, 2004, 13(11): 58-60.
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Citation:
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Hua Xinzhu. THE FIXING METHOD OF PILLAR RESISTANCE FORCE ON THE TOP COAL WORKING FACEJ. CHINA MINING MAGAZINE, 2004, 13(11): 58-60.
|
Hua Xinzhu. THE FIXING METHOD OF PILLAR RESISTANCE FORCE ON THE TOP COAL WORKING FACEJ. CHINA MINING MAGAZINE, 2004, 13(11): 58-60.
|
Citation:
|
Hua Xinzhu. THE FIXING METHOD OF PILLAR RESISTANCE FORCE ON THE TOP COAL WORKING FACEJ. CHINA MINING MAGAZINE, 2004, 13(11): 58-60.
|
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