<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 312:1980]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/42/4251.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± 312:1980]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 312:1980 - Manganese ores — Determination of active oxygen content, expressed as manganese dioxide — Volumetric method]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/42/4251.html /cms/render/live/es/sites/isoorg/contents/data/standard/00/42/4251.html 1986-06-01