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Oscillator tubes anode dissipated more than 25 W. Test method for relative level of combinative products
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Data transmission system signal conversion equipment for unswitched voice frequency channels, using compression information cod
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System for multiplexing sound channel television. Basic parameters
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Information and communication technologies in education. Electronic-library systems. General regulations
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Information technology. Learning, education, and training. Content packaging. Part 1. Information model
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Information technology. Open systems interconnection. Systems management overview
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