Szukana fraza: [Opis = "tytuł równoległy\: Acid\-base equilibrium of 4\-methyl\-3\-R\-thiazolone\-\(2\)\-hydrazone derivatives. VI, Ionization constants of \[4\-methyl\-3\-R\-thiazolidene\-\(2\)\] and ß\-methyl\-ß\-\[4\-methylthiazolyl\-\(2\)\]\-hydrazydes of picolin, nicotin and isonicotin acid"]

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