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地质学报 1945

PalaeozoicPlantsfromNinghsia

H.C.Sze,H.H.Lee

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Abstract:

INTRODUCTIONThefossilplantsformingthesubjectofthispaperwerecollectedbyMessrs.C.S.Pien~1andH.H.LeeofthegeologicalSurveyofChinain1943.Thecollectionisfairlylarge,butunfortunatelythespecimensaregenerally

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