Russian standards PDF
Electromagnetic compatibility of technical equipment. Radio communication equipment. Part 1. Common technical requirements and test methods
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Mining machinery. Powered roof supports. Hydraulic control systems. Safety requirements and test methods
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Shaftline conical joints. Types, construction and dimensions
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Unified system of corrosion and ageing protection. Hermetic materials. Methods test
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Explosive atmospheres. Electrical resistance trace heating. Part 30-2. Application guide for design, installation and maintenance
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