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Information processing systems. 12,7-mm 9-track magnetic tapes with the density of recording 246 bit/mm. Technical requirements

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Identification cards. Contactless integrated circuit cards. Proximity cards. Part 1. Physical characteristics

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Transistors bipolar and field-effect. Basic parameters

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Adjusting fixturing ring with a slit and threaded holes. Design and dimensions

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Pot cores of ferrite. Construction and sizes

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Photocells. Method of dark current measurement

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