Finding of Pyroclstic Rock in Coal-series of late Paleozoic at the Southern Foot of Yanshan Mountain in North China[J]. COAL GEOLOGY & EXPLORATION, 1984, 12(5): 8-9.
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Citation:
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Finding of Pyroclstic Rock in Coal-series of late Paleozoic at the Southern Foot of Yanshan Mountain in North China[J]. COAL GEOLOGY & EXPLORATION, 1984, 12(5): 8-9.
|
Finding of Pyroclstic Rock in Coal-series of late Paleozoic at the Southern Foot of Yanshan Mountain in North China[J]. COAL GEOLOGY & EXPLORATION, 1984, 12(5): 8-9.
|
Citation:
|
Finding of Pyroclstic Rock in Coal-series of late Paleozoic at the Southern Foot of Yanshan Mountain in North China[J]. COAL GEOLOGY & EXPLORATION, 1984, 12(5): 8-9.
|
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