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Fixed installations for railway applications - Electrical safety, earthing and the return circuit - Part 2: Provisions against the effects of stray currents caused by DC traction systems

Project

00165351

Gully tops and manhole tops for vehicular and pedestrian areas - Part 7: Gully tops and manhole tops made of polyamide

Gully tops and manhole tops for vehicular and pedestrian areas - Part 7: Gully tops and manhole tops made of polyamide

Project

prEN 933-1

Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method

Ambient air - Standard method for the measurement of the concentration of carbon monoxide by non-dispersive infrared spectroscopy; German version FprEN 14626:2024

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