The American Phytopathological Society (APS) is a non-profit, professional, scientific organization dedicated to the study and control of plant diseases.
Richard R. Nelson, 1926-1991. R. D. Schein, S. C. Nelson, and J. F.
Tammen. Phytopathology 84:226-227. Copyright 1994 The American Phytopathological
Society. doi:10.1094/Phyto-84-226.
