Semiconductor devices. Designation system
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Capacitors and resistors. Designations of electrical parameters
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Legend conventional symbols for radio stations
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Electro vacuum electronic and ionic devices. Designation system
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Electric vacuum devices. Identification code
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Condensers, resistors, bolometers. System of abbreviations
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Information recording and reproduction. Terms
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Information recording and reproduction. Terms and definitions
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Information recording and reproduction. Terms and definitions
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Information recording and reproduction. Terms and definitions
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SHF electronic instruments. Designation system
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Electronic tubes. Terms and definitions
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