Russian standards PDF
State system for ensuring the uniformity of measurements. Optics and optical instruments. Field procedures for testing geodetic and surveying instruments. Part 3. Theodolites
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State system for ensuring the uniformity of measurements. Optics and optical instruments. Field procedures for testing geodetic and surveying instruments. Part 6. Rotating lasers
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Acoustics. Sound-scattering properties of surfaces. Part 2. Measurement of the directional diffusion coefficient in a free field
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Destructive tests on welds in metallic materials. Cold cracking tests for weldments. Arc welding processes. Part 2. Self-restraint tests
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Textiles. Quantitative analysis of animal fibres by microscopy. Cashmere, wool, specialty fibres and their blends
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Implants for surgery. Wear of total intervertebral spinal disc prostheses. Part 1. Loading and displacement parameters for wear testing and corresponding environmental conditions for test
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