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Jötten, F.: Im Handumdrehen : 30 Jahre Rubik's Cube (2010)
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- 17. 7.1996 9:33:22
21. 8.2010 17:22:45
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Jötten, F.; Rokicki, T.: "Es wird nie ein genialeres Rätsel geben" (2010)
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- Date
- 17. 7.1996 9:33:22
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Jötten, F.: Auf der Suche nach der göttlichen Zahl : Wie ein Spielzeug einen Darmstädter Mathematiker ein Erwachsenenleben lang nicht mehr losließ (2010)
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- Date
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