(PDF) The Effect Of 4-Acyl Substituents On The Infrared Stretching Frequencies Of Some 1-Phenyl -3- Methyl -4- Acylpyrazol -5-Ones And Their Magnesium (Ii)

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The Effect Of 4-Acyl Substituents On The Infrared Stretching Frequencies Of Some 1-Phenyl -3- Methyl -4- Acylpyrazol -5-Ones And Their Magnesium (Ii) ,Cobalt(Ii), Copper (Ii) And Zinc (Ii) Chelates
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