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地质学报 1933

THINNEDPOLISHEDSECTIONOFCOAL,ANEWTECHNIQUEINCOALPETROGRAPHY

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Abstract:

Opinionsoftendifferamongcoalpetrographersastotherelativead-vantagesofthethinsectionsandthepolishedsections.Inrealitybothofthemareusefulandtheyshouldbeusedsimultaneouslyinordertogetaclearand

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