<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 389-2:1994]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/43/4378.html Normas y proyectos de Ïã¸ÛÁùºÏ²Ê¿ª½± Ïã¸ÛÁùºÏ²Ê¿ª½±.org 60 /modules/isoorg-template/img/iso/favicon/red/favicon1.ico http://www.iso.org/ <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 389-2:1994]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 389-2:1994 - Acoustics — Reference zero for the calibration of audiometric equipment — Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/43/4378.html /cms/render/live/es/sites/isoorg/contents/data/standard/00/43/4378.html 2020-04-09