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ISO 13909-7:2001

Заменен
Hard coal and coke. Mechanical sampling. Part 7. Methods for determining the precision of sampling, sample preparation and testing — 48 стр.
ICS
73.040 Coals / Угли
75.160.10 Solid. Including coal products, coke, peat, wood, derivatives of coal pyrolysis, etc. / Твердое топливо. Включая угольные продукты, кокс, торф, древесину и т.д.