Discrimination of pentaerythritol tetranitrate traces on human hair using attenuated total reflectance fourier transform infrared spectroscopy and chemometric methods / by Mohamed Saleem, 1983-, author 620502, Hasmerya Maarof, supervisor 204881, Naji Arafat Mahat, supervisor 569255, Akhbar Ali Abdul Kareem, supervisor 613672, Fakulti Sains 8004