Russian standards PDF
Optics and photonics. Lenses for optical electronic systems. Test methods
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Optics and photonics. Lasers and laser-related equipment. Method for measurement of phase difference introduced into the polarized laser radiation
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Kit for the animal’s brucellosis diagnosis by method of immunodiffusion. Specifications
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Timber structures. Transportation and storage conditions
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Services in railway transport. Requirements for passenger service in long-distance trains
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