Pierre Gy's sampling theory and sampling practice heterogeneity, sampling correctness, and statistical process control. von Pitard, Francis F.

Sampling of particulate materials theory and practice

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Ore microscopy. von Cameron, Eugene N. (Eugene Nathan) 1910-

The sampling and assay of the precious metals, comprising gold, silver, platinum, and the platinum group metals in ores, bullion, and products von Smith, Ernest Alfred

Mineralization in the Thanksgiving skarn deposit, Baguio District, Luzon, Philippines von Mamo, Tegist Chernet