Plastics - Methods of exposure to direct weathering, to weathering using glass-filtered daylight and to intensified weathering by daylight using Fresnel mirrors (ISO 877:1994); German version EN ISO 877:1996— 18 стр.
Unfired pressure vessels - Part 8: Additional requirements for pressure vessels of aluminium and aluminium alloys; German version EN 13445-8:2009— 28 стр.
German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Management of road safety measures at road works— 16 стр.
German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Management of road safety measures at road works— 16 стр.