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Raremetallic concentrates. Method for the determination of alumina
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Raremetallic concentrates. Method for the determination of iron (general)
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Raremetallic concentrates. Method for the determination of calcium oxide
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Letter and numerical hand stamps. Types and basic dimensions
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Dials and scales of manometric thermometers. Technical requirements and marking
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Methanol poison, technical. Method for determination of distillation temperature ranges
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