<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 389-7:1996]]> /cms/render/live/es/sites/isoorg/contents/data/standard/02/28/22800.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± 389-7:1996]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 389-7:1996 - Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions]]> /cms/render/live/es/sites/isoorg/contents/data/standard/02/28/22800.html /cms/render/live/es/sites/isoorg/contents/data/standard/02/28/22800.html 2005-11-03