<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 31-2:1992]]> /cms/render/live/en/sites/isoorg/contents/data/standard/00/36/3626.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± 31-2:1992]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 31-2:1992 - Quantities and units — Part 2: Periodic and related phenomena]]> /cms/render/live/en/sites/isoorg/contents/data/standard/00/36/3626.html /cms/render/live/en/sites/isoorg/contents/data/standard/00/36/3626.html 2006-03-17