Contingut suprimit Contingut afegit
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{{commonscat|Leibnitz calculator}}
*{{cite web
| last = Redshaw
| first = Kerry
| authorlink = http://www.kerryr.net/index.htm
| coauthors =
| title = Picture Gallery: Gottfried Wilhelm Leibniz
| work = Pioneers of computing
| publisher = KerryR personal website
| date =
| url = http://www.kerryr.net/pioneers/gallery/leibniz.htm
| doi =
| accessdate = 2008-07-06}} Pictures of machine and diagrams of mechanism
*{{cite web
| title = 'The Great Humming God'
| work = ChessBase News
| publisher = Chessbase GmbH, Germany
| date = 2003-04-28
| url = http://www.chessbase.com/newsdetail.asp?newsid=928
| format =
| doi =
| accessdate = 2008-07-06}} News article in chess magazine showing closeup pictures of Hannover machine.
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