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| Keywords: Pfferle.jpg A photograph of William C Pfefferle the father of catalytic combustion Transferred from http //en wikipedia org en wikipedia; transferred to Commons by User Logan using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper 2008-06-02 Original uploader was Bridget harrington at http //en wikipedia org en wikipedia Later version s were uploaded by Rifleman 82 at http //en wikipedia org en wikipedia Released into the public domain by the author en wikipedia Bridget harrington original upload log page en wikipedia Pfferle jpg 2008-06-02 16 14 Rifleman 82 669×648× 321336 bytes <nowiki>Lightened picture enhanced contrast </nowiki> 2007-03-21 20 19 Bridget harrington 669×648× 337326 bytes <nowiki>A photograph of William Pfferle the father of catalytic combustion </nowiki> William C Pfefferle | ||||
