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#14
23.10.2015, 14:26:24
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Uite cum se obtine apa de robinet, cea "potabila".
https://www.youtube.com/watch?v=eIoSt0-K7wI Cine poate numara cate chimicale se folosesc in proces?
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Suprema intelepciune este a distinge binele de rau. 
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