The TonStein in Coal Seam C25 of Upper-Permian, Southern Sichuan ProvinceJ. COAL GEOLOGY & EXPLORATION, 1988, 16(5): 12-15.
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Citation:
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The TonStein in Coal Seam C25 of Upper-Permian, Southern Sichuan ProvinceJ. COAL GEOLOGY & EXPLORATION, 1988, 16(5): 12-15.
|
The TonStein in Coal Seam C25 of Upper-Permian, Southern Sichuan ProvinceJ. COAL GEOLOGY & EXPLORATION, 1988, 16(5): 12-15.
|
Citation:
|
The TonStein in Coal Seam C25 of Upper-Permian, Southern Sichuan ProvinceJ. COAL GEOLOGY & EXPLORATION, 1988, 16(5): 12-15.
|