<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 31-2:1978/Amd 1:1985]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/36/3627.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± 31-2:1978/Amd 1:1985]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 31-2:1978/Amd 1:1985 - Quantities and units of periodic and related phenomena — Amendment 1]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/36/3627.html /cms/render/live/es/sites/isoorg/contents/data/standard/00/36/3627.html 1992-08-27