Copyright of the pictures in this directory:
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persona_jmcblack.jpg    Engelbert Hosner    PIXELIO http://www.pixelio.de/details.php?image_id=91107
persona_jsmith.jpg      Sascha Sambale      PIXELIO http://www.pixelio.de/details.php?image_id=226230
persona_pwulf.jpg                           PIXELIO http://www.pixelio.de
persona_sclever.jpg     Konstantin Gastmann PIXELIO http://www.pixelio.de/details.php?image_id=162318