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Television magnifying aids equipment. General specifications
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Information protection. Protected operational systems. Means of protection against purposeful powerful electromagnetic impacts. General requirements
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Optical fibres. Part 1-40. Measurement methods and test procedures. Attenuation
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Digital broadcasting system DRM in the frequency range less than 30 MHz. Digital encoder-modulator. Basis parameters and technical requirements
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Amateur module cameras. Threaded coupling of lens camera. Basic and coupling dimensions
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