DIN ISO 8253-1:1992 Acoustics; audiometric test methods; part 1: basic pure tone air and bone conduction threshold audiometry; identical with ISO 8253-1:1989
2008DIN ISO 8253-1 E:2008 Entwurfsdokument – Akustik – Akustische Prüfverfahren – Teil 1: Grundlegende Reinton-Luft- und Knochenleitungsschwellenaudiometrie (ISO/CD 8253-1:2007)
1992DIN ISO 8253-1:1992 Acoustics; audiometric test methods; part 1: basic pure tone air and bone conduction threshold audiometry; identical with ISO 8253-1:1989