Improvement of Long Double CorerJ. COAL GEOLOGY & EXPLORATION, 1987, 15(3): 55-56.
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Citation:
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Improvement of Long Double CorerJ. COAL GEOLOGY & EXPLORATION, 1987, 15(3): 55-56.
|
Improvement of Long Double CorerJ. COAL GEOLOGY & EXPLORATION, 1987, 15(3): 55-56.
|
Citation:
|
Improvement of Long Double CorerJ. COAL GEOLOGY & EXPLORATION, 1987, 15(3): 55-56.
|