#ScienceTweetup
#ScienceTweetup am Tag der Offenen Tür/Nacht des Wissens am 02.11.2013 beim DESY in Hamburg.

#ScienceTweetup at DESY (German Electron Synchrotron), a research centre of the Helmholtz Association, in Hamburg, Open Day/Night of Knowledge, 02/11/2013
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