<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 16:1975]]> /cms/render/live/en/sites/isoorg/contents/data/standard/00/36/3601.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± 16:1975]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 16:1975 - Acoustics — Standard tuning frequency (Standard musical pitch)]]> /cms/render/live/en/sites/isoorg/contents/data/standard/00/36/3601.html /cms/render/live/en/sites/isoorg/contents/data/standard/00/36/3601.html 2022-09-30