len cisto k prikladom sa pyta..
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Zobrazi» príspevky MenuQuote from: Pusta on 04.02.2009, 04:56:05benzen, uhlovodik, organicky perzistentny polutant, a co som to este zabudol.. a uz viem.. karboxylova kyselina..
nespominajte mi chemiu ked este niekde najdem napisane slovo "benzen" "uhlovodik" "organicky perzistentny polutant" a a alebo "karboxylova kyselina" tak skocim z okna