<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 3742:1975]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/92/9234.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± 3742:1975]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 3742:1975 - Acoustics — Determination of sound power levels of noise sources — Precision methods for discrete-frequency and narrow-band sources in reverberation rooms]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/92/9234.html /cms/render/live/es/sites/isoorg/contents/data/standard/00/92/9234.html 1988-12-01