DIN EN ISO 8253-1:2011 Acoustics - Audiometric test methods - Part 1: Pure-tone air and bone conduction audiometry (ISO 8253-1:2010); German version EN ISO 8253-1:2010
2011DIN EN ISO 8253-1:2011-04 Acoustics - Audiometric test methods - Part 1: Pure-tone air and bone conduction audiometry (ISO 8253-1:2010); German version EN ISO 8253-1:2010 / Note: DIN EN 26189 (1992-03) and DIN ISO 8253-1 (1992-05) remain valid alongside this standard until 2011...
2011DIN EN ISO 8253-1:2011 Acoustics - Audiometric test methods - Part 1: Pure-tone air and bone conduction audiometry (ISO 8253-1:2010); German version EN ISO 8253-1:2010