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GB/T 23561.4-2009 standard english preview version PDF file download



GB Standard Code GB/T 23561.4-2009
Standard Category China National Standards
GB Standard English Title Methods for determining the physical and mechanical properties of coal and rock - Part 4: Methods for calculating the porosity of coal and rock
GB Standard Chinese Title 煤和岩石物理力学性质测定方法 第4部分:煤和岩石孔隙率计算方法
Chinese Version Price $15 USD per 50 pages
English Translation Price About $15  per 1 page; Inquire us for detail price

 
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