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Keyword [the fourth aquifer]
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1. Study On Parameters About Reasonable Scale Of Coal And Rock Pillar In Qingdong Coal Mine I3Mining Area
2. Sunan Mining The Fourth Aquifer Hydrogeological Characteristics
3. Sedimentary Characteristics And Water Abundance Assessment Of The Fourth Aquifer In Xutuan Coal Mine
4. Study On Hydrogeological Characteristics Of The Fourth Aquifer In Xinhu Coal Mine
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