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Aerial photography for mapping. Technical requirements
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AC сircuit-breakers for voltages from 6 to 35 kV for railway traction substations, transformer substations and railway power supply linear devices. General specifications
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Descriptive and normative requirement formats. Information system on indicators and requirements for medical technics
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Technical data for computer-aided design. Part 1.1. Low-voltage switchgear and controlgear. Property classification
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