<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 1999:1990]]> /cms/render/live/en/sites/isoorg/contents/data/standard/00/67/6759.html Ïã¸ÛÁùºÏ²Ê¿ª½± standards and projects Ïã¸ÛÁùºÏ²Ê¿ª½±.org 60 /modules/isoorg-template/img/iso/favicon/red/favicon1.ico http://www.iso.org/ <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 1999:1990]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 1999:1990 - Acoustics — Determination of occupational noise exposure and estimation of noise-induced hearing impairment]]> /cms/render/live/en/sites/isoorg/contents/data/standard/00/67/6759.html /cms/render/live/en/sites/isoorg/contents/data/standard/00/67/6759.html 2013-09-23