Methodological Instructive Regulations on the Setting of Norms for and the Determination and Recordi – Russian translation

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Methodological Instructive Regulations on the Setting of Norms for and the Determination and Recording of Losses and Impoverishment of Gold-Containing Ore Sands Upon Extraction

Методические указания по нормированию, определению и учёту потерь и разубоживания золотосодержащей руды песков при добыче (E&Y ABelonogov)

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