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https://www.freundeskreis-tentofnations.de/en/johannes-koch/ Johannes Koch - Freundeskreis Tent of Nations Aug 4, 2025 - Johannes Koch was a volunteer at the Tent of Nations from August 2014 to August 2015 tent of nations johannes koch freundeskreis https://lists.w3.org/Archives/Public/public-rdf-in-xhtml-tf/2008Feb/0143.html Re: Comments on http://www.w3.org/TR/2008/WD-rdfa-syntax-20080221 from Johannes Koch on 2008-02-27... johannes koch comments http www rdfa https://www.johannes-koch-music.de/bio Bio — Johannes Koch johannes koch bio https://lists.w3.org/Archives/Public/public-wai-ert/2007Jun/0007 MobileOK review from Johannes Koch on 2007-06-05 (public-wai-ert@w3.org from June 2007) johannes koch review public wai ert