Russian standards PDF
United power system and isolated power systems. Relay protection and automation. Automatic emergency control of electric power systems. Local automation devices for preventing stability violations. Norms and requirements
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National spatial data system. Spatial Referencing. Reference systems and frames
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National spatial data system. Addressing. Conceptual model
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Test codes for metal-cutting machines. Part 8. Vibrations
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Digital professional mobile radio communication. General provisions. Mode of direct conventional communication of subscriber stations
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