Conference ProceedingsDetection and Simultaneous Quantitation of ß-Naphyrone and 3,4-Methylenedioxypyrovalerone by Gas Chromatography-Mass SpectrometryPresenting section:Criminalistics2012Parada, Gina M., Allentown PA; Brettell, Thomas A., Allentown PA; Dawes, Michelle, Yardley PAView the paperCriminalistics