33. Xylidiny●, jejich isomery, soli, halogenované a sulfonované deriváty;
Xylidines, their isomers, salts and halogenated and sulphonated derivatives°
33. Xylidiny●, jejich isomery, soli, halogenované a sulfonované deriváty;
Xylidines, their isomers, salts and halogenated and sulphonated derivatives°