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ISO 789-4:1986 Agricultural tractors — Test procedures — Part 4: Measurement of exhaust smoke
ISO 6557-1:1986 Fruits, vegetables and derived products — Determination of ascorbic acid — Part 1: Reference method
ISO 5500:1986 Oilseed residues — Sampling
ISO 4689:1986 Iron ores — Determination of sulfur content — Barium sulfate gravimetric method
ISO 6830:1986 Iron ores — Determination of aluminium content — EDTA titrimetric method
ISO 8541:1986 Manganese and chromium ores — Experimental methods for checking the bias of sampling and sample preparation
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