Hearing protectors - Safety requirements and testing - Part 3: Ear muffs attached to an industrial safety helmet; German version EN 352-3:1996— 19 стр.
Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:1994); German version EN ISO 4869-2:1995— 10 стр.
Aerospace series - Steel FE-CM3801 (X5CrNiCuNb16-4) - Homogenized, solution treated and precipitation hardened - Investment casting - D<(Index)e> <kleiner => 50 mm - R<(Index)m> <grцЯer => 1030 MPa; German and English version EN 3973:2006— 14 стр.
Acoustics; hearing protectors; part 3: simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes (ISO/TR 4869-3:1989); German version EN 24869-3:1993— 10 стр.
Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:1994); German version EN ISO 4869-2:1995, Corrigenda to DIN EN ISO 4869-2:1995-08; German version EN ISO 4869-2:1995/AC:2007— 2 стр.