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State system for ensuring the uniformity of measurements. D.C. Measuring voltage dividers. Methods and means of verification
Document status: Withdrawn
Refractory products for electric-arc steel-smelting furnace lining. Specifications
Document status: Active
Mining. Change over station. General technical requirements
Document status: Active
Explosive atmospheres. Part 20-1. Material characteristics for gas and vapour classification. Test methods and data
Document status: Active
Transformer hermetic centrifugal electric pumps. Types. Basic parameters and dimensions
Document status: Active