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  Indian J Med Microbiol
 

Figure 7: The ratio of stretching vibration band intensities of free and bound C=O groups of phenacetin (I1659/I1646) to the composite composition

Figure 7: The ratio of stretching vibration band intensities of free and bound C=O groups of phenacetin (I<sub>1659</sub>/I<sub>1646</sub>) to the composite composition