You can either download the .ggb file alone or the complete webpage for students with tasks.
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Matthias Hornof — November 25, 2013 - 4:45 PM
April 4, 2016 - 4:59 PM Matthias Hornof
June 13, 2016 - 10:30 AM Martin Becker
November 7, 2016 - 12:13 AM Konrad Heberlein
