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地质学报 1933
AMETHODOFLOCATINGPOLESOFTHESTEREOGRAPHICPROJECTIONWITHOUTTHECURVEDRULERAbstract: AninstrumentwhichhaslongbeenusedinconstructingthestereographicprojectionofacrystalisthecurvedrulersuggestedbybothWulffandFedorowin1893.~1Itisaconvenientandquickmethodfordrawingtheflatarcsofverylongradiuswhichcannot
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