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Non-metallic ore materials. Methods for determination of calcium oxide and magnesium oxide mass fractions
Document status: Active
Essential oils, aromatics and their intermediates. Method for determination of angle of optical rotation and specific rotation value of polarization flat
Document status: Withdrawn
Steel casing and tubing for petroleum and natural gas industries. General specifications
Document status: Active
Pneumatic hammer drills. Drill steels. General technical requirements
Document status: Active