Preparation and Characterization of a Suite of Ephedra-Containing Standard Reference Materials
Autores:Elizabth A. Mackey, Staci Mitvalsky, Joseph W. Lam, Stephen G. Capara, Martha L. Gay, Therese A. Butler, Stephen E. Long, Daniel W. Howell, Katherine E. Sharpless, Toshihide Ihara, Karen E. Murphy, Joseph Betz, Graeme Gardner, Margaret McCoeye, Agnes NguyenPho, William R. Mindak, John Cheng, David L. Anderson, Catharine A. Fraser