@article{893436, author = {Susan Tai and Bei Xu and Michael Welch}, title = {Determination of 19-Norandrosterone in CCQM-P68. NIST Results Using an Isotope Dilution Liquid Chromatography/Tandem Mass Spectrometry Method}, year = {2008}, month = {2008-10-16 14:10:10}, publisher = {Accreditation and Quality Assurance}, language = {en}, }