Markus Kniebes Journal urn:uuid:562e769a0b0d31947c87814c2f739ba1 2023-25-09T23:23:37 <![CDATA[Ascending and Descending in Lego]]> urn:uuid:1340 2002-10-10T15:42:00 Und wieder mal Lego: Escher's „Ascending and Descending„

]]> Markus Kniebes kniebes@pm.me