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ejdzej: I have a marvelous demonstration of this proposition, but I am a baby #matematyka #dzieci #nauka [www.cafepress.com] |
| 2011/12/23 11:08:25, 0 ♥ |
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ejdzej: I have a marvelous demonstration of this proposition, but I am a baby #matematyka #dzieci #nauka [www.cafepress.com] |
| 2011/12/23 11:08:25, 0 ♥ |