Per Holmberg

<strong>Quelle:</strong> NASA/JPL-Caltech/J. Huchra (Harvard-Smithsonian CfA) - <a rel="nofollow" class="external free" href="http://www.galex.caltech.edu/MEDIA/2007-02/introduction.html">http://www.galex.caltech.edu/MEDIA/2007-02/introduction.html</a>, <a rel="nofollow" class="external free" href="http://www.galex.caltech.edu/media/glx2007-02r_img01.html">http://www.galex.caltech.edu/media/glx2007-02r_img01.html</a>

<strong>Quelle:</strong> NASA/JPL-Caltech/K. Gordon (Space Telescope Science Institute) and SINGS Team - <a rel="nofollow" class="external free" href="http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=sig07-025">http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=sig07-025</a>

<strong>Quelle:</strong> <a href="https://sv.wikipedia.org/wiki/Per_Bagge" class="extiw" title="sv:Per Bagge">Per Bagge</a> (1866-1936) - <a rel="nofollow" class="external text" href="http://www.alvin-portal.org/alvin/imageViewer.jsf?dsId=ATTACHMENT-0001&amp;pid=alvin-record%3A168129&amp;dswid=-6515">Alvin</a>

<strong>Quelle:</strong> <bdi><a href="https://en.wikipedia.org/wiki/en:Per_S%C3%B6dermark" class="extiw" title="w:en:Per Södermark"><span title="Swedish painter (1822–1889)">Johan Per (Per) Sodermark</span></a> </bdi> - <a rel="nofollow" class="external free" href="http://kokoelmat.fng.fi/wandora/w?action=image&amp;url=http://172.20.0.20/wandora/repository/art/H0033800.jpg&amp;profile=topicartwork&amp;imageid=H0033800">http://kokoelmat.fng.fi/wandora/w?action=image&amp;url=http://172.20.0.20/wandora/repository/art/H0033800.jpg&amp;profile=topicartwork&amp;imageid=H0033800</a>

<strong>Quelle:</strong> Pär Dilot - <span class="int-own-work" lang="en">Own work</span>