Russian standards PDF
DC high-speed circuit-breakers for subway rolling stock. Safety requirements and methods of control
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Fiberboards of a dry method of production, laminated with papers impregnated with thermosetting resins. Specifications
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Оpen hopper cars with the track 1520 mm for bulk cargoel. General specifications
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Metal stair railings, balconies, roofs, stairs flights and landings. General technical conditions
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