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Coal sampling method (including work page)(Chinese Edition) - Tapa blanda

WEN JUN PING , ZHANG HAI FANG BIAN

 
9787502084431: Coal sampling method (including work page)(Chinese Edition)

Sinopsis

Language:Chinese.paperback.Pub Date:2020-12-01.publisher:Emergency Management Press.description:Paperback. Pub Date: 2020-12-01 Pages: 186 Language: Chinese Publisher: Emergency Management Press Coal Sampling Method (including work page) introduced the commercial coal samples. coal seam coal samples and production coal samples. and The four sam

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