Russian standards PDF

Motor vehicles. Fasteners. Weld bolts. Design and dimensions

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Environmental protection. Surface and ground water. General requirements for protection against contamination by mineral fertilizers

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Means of education. Electronic educational devices for children. General requirements

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Optics and photonics. Optical lenses. Design and dimensions

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Optics and photonics. Densitometers. Terms and definitions

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Optics and photonics. Optical details. Typical technological processes for applying three-layer achromatic antireflection coatings from solutions to optical parts for spectral ranges from 0,5 to 2,0 µm

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