Samarium, europium, gadolinium, terbium, holmium, erbium, thulium, ytterbium, lutecium and their oxides. Spectral method of determination of impurities in oxides of rare-earth elements
Ecological requirements for estate properties. Buildings and civil constructions. Method for assessing sustainability taking into account local energy and environmental features
Tests on electric and optical fibre cables under fire conditions. Part 2-2. Test for vertical flame propagation for a single small insulated wire or cable. Procedure for diffusion flame
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