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Admixtures for concretes and mortars. Determination and estimate of the efficiency
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Electric equipment of a railway rolling stock. Part 3. D.c. circuit-breakers. General specifications
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Roofing and hydraulic-insulating flexible polymeric (thermoplastic or elastomer) materials. Method for determination of foldability at low temperatures
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Cross beams of rigid portals for overhead contact line of rail transport. General specifications
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