Quality requirements for fusion welding of metallic materials - Part 5: Documents with which it is necessary to conform to claim conformity to the quality requirements of ISO 3834-2, ISO 3834-3 or ISO 3834-4 (ISO 3834-5:2005); German version EN ISO 3834-5:2005, Corrigendum to DIN EN ISO 3834-5:2006-03; German version EN ISO 3834-5:2005/AC:2008— 2 стр.
German standard methods for the examination of water, waste water and sludge - Parameters characterizing effects and substances (group H) - Part 60: Spectrometric determination of the chlorophyll-a concentration in water (H 60)— 29 стр.