<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 3893:1977]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/94/9499.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± 3893:1977]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 3893:1977 - Concrete — Classification by compressive strength]]> /cms/render/live/es/sites/isoorg/contents/data/standard/00/94/9499.html /cms/render/live/es/sites/isoorg/contents/data/standard/00/94/9499.html 2009-04-27