<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 5129:1981]]> /cms/render/live/en/sites/isoorg/contents/data/standard/01/11/11128.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± 5129:1981]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 5129:1981 - Acoustics — Measurement of noise inside aircraft]]> /cms/render/live/en/sites/isoorg/contents/data/standard/01/11/11128.html /cms/render/live/en/sites/isoorg/contents/data/standard/01/11/11128.html 1987-12-01