File:20Pulley-Da Vinci.JPG
StromBer uploaded "File:20Pulley-Da Vinci.JPG" {{Information |Description ={{de|1=Zeichnung von Leonardo mit 20 Rollen, 1:20!
nicht wie in der Zeichnung 100:102400 (1:1024)}} |Source =http://www.diomedia.com/public/en/10524084/imageDetails.html |Author =Artist: Leonardo da ...
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