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Keyword [Middle-Upper Permian]
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1. Origin Of The Siliceous Rocks And Arboniferous Siliceous Limestone In The Middle-upper Permian And Its Relationship To Manganese Mineralization In Manganese Mining Area Of Zuiyi In Guizhou
2. Research On The Types Of Middle-Upper Permian Sedimentary System And Shale Facies Of Lucaogou Formation In The Southeastern Margin Of Junggar Basin
3. Elementary Geochemistry Of Middle-Upper Permian Shale From Well GD1 In Xuancheng Area
4. Middle-Upper Permian Siliceous Rocks In Lower Yangtze Area Origin And Shale Gas Potential
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