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地质学报 1939
NEWFOSSILMATERIALANDARTIFACTSCOLLECTEDFROMTHECHOUKOUTIENREGIONDURINGTHEYEARS1937TO1939Abstract: Owingtoexceptionallocalconditionssincethefallof1937,theroutineexcavationatChoukoutiencouldnotberesumed,norwasitpossibletocarryoutfieldworkinotherregionsofNorthChina.Ourscientificactivities,however,progressedasheretoforeandcon-siderabletimewasdevotedtothepreparationandstudyofthematerial
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