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地质学报 1946
AFossilWoodfromNinghsia, PP. 101-104 Abstract: ThispaperisconcernedwithablockofpetrifiedwoodscollectedbyMessers.C.S.PienandH.H.LeeoftheGeologicalSurveyofChinaatthelocalityHulustai(about106°4°E.,39°15′N.),northwestalongtheAlashanintheNinghsiaprovince,northernChina.Likethegreatmajorityofpetrifiedwoods
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