Marvin C McMasterDr. Marvin McMaster has a Ph.D in Organic Chemistry and Postdoctoral experience in Biochemistry and Analytical Chemistry. He has worked for DuPont, Kraft Foods, and Ciba-Geigy as a research and process development chemist. He worked 25 years as a Tecnical Sales Representative selling and supporting HPLC analytical systems. During this time he conducted over thirty HPLC schools for his employer's customers and for students at University of Missouri - Saint Louis as an adjunct professor. He has supported and networked Macintosh computers for Washington University Medical School. He retired in 2002 to teach Bible study for St. Andrew United Methodist Church while continuing to writing technical text books and fictional novels full-time. Read More Read Less