<![CDATA[ISO 32000-1:2008 - Document management -- Portable document format -- Part 1: PDF 1.7]]> http://www.iso.org/cms/render/live/en/sites/isoorg/contents/data/standard/05/15/51502.html http://www.iso.org/cms/render/live/en/sites/isoorg/contents/data/standard/05/15/51502.html 2018-04-15