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地质学报 1935
ACHEMICALANALYSISOFTHEFOSSILWOOD,XENOXYLONAbstract: ThematerialfortheanalysisistakenfromacollectionmadebyH.W.WangoftheGeologicalSurveyofChinaatHsiachiakou(夏家？),HuailaiHsieh(怀来县),Chahar(察哈尔).AnanatomicalstudyofthefossilhasbeenmadebyProf.C.Y.Chang~1whoidentifiedittobeofthegenusXenoxylon,
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