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TARIGAN RE, ANDRY M, DEWI RK, NASUTION MA, LUBIS MF. QUANTITATIVE ANALYSIS OF DEXTROMETHORPHAN-HBr, GUAIFENESIN AND DIPHENHYDRAMINE-HCl IN TABLET DOSAGE FORM BY SUCCESSIVE RATIO DERIVATIVE SPECTRA METHOD. Int J App Pharm [Internet]. 2024 Jan. 7 [cited 2024 Nov. 22];16(1):71-5. Available from: https://mail.innovareacademics.in/journals/index.php/ijap/article/view/49222