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Colour television picture tubes. Method for determination of value gamma
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Amplifying, rectifying and transmitting tubes of anode dissipated power to 25 W and vacuum display tubes for wide application designs. General specifications
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Automatic identification. Biometric identification. Biometric data interchange formats. Part 3. Finger pattern spectral data
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Reprography. Micrography. Lens. General technical requirements
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Telephone sets. Voice-frequency method of speech intelligibility measurement
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