Jia Guiting, Hu Kuanrong. THE FORMATION AND DISTRIBUTION OF COLLAPSE COLUMNS IN NORTH-CHINA-TYPE COAL FIELDS[J]. CARSOLOGICA SINICA, 1989, 8(4): 261-267.
Citation:
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Jia Guiting, Hu Kuanrong. THE FORMATION AND DISTRIBUTION OF COLLAPSE COLUMNS IN NORTH-CHINA-TYPE COAL FIELDS[J]. CARSOLOGICA SINICA, 1989, 8(4): 261-267.
|
Jia Guiting, Hu Kuanrong. THE FORMATION AND DISTRIBUTION OF COLLAPSE COLUMNS IN NORTH-CHINA-TYPE COAL FIELDS[J]. CARSOLOGICA SINICA, 1989, 8(4): 261-267.
Citation:
|
Jia Guiting, Hu Kuanrong. THE FORMATION AND DISTRIBUTION OF COLLAPSE COLUMNS IN NORTH-CHINA-TYPE COAL FIELDS[J]. CARSOLOGICA SINICA, 1989, 8(4): 261-267.
|
THE FORMATION AND DISTRIBUTION OF COLLAPSE COLUMNS IN NORTH-CHINA-TYPE COAL FIELDS