Conference ProceedingsSimultaneous High Performance Thin Layer Chromatographic Determination of Heroine, Morphine, Cocaine, and MDMAPresenting section:Criminalistics2008Cengiz, Salih, Istanbul TURKEY; Tutanc, Levent, Cerrahpasa TURKEY; Mercan, Selda, Istanbul TURKEY; Turkmen, Zeynep, Istanbul TURKEYView the paperCriminalistics