The American Phytopathological Society (APS) is a non-profit, professional, scientific organization dedicated to the study and control of plant diseases.
Robert S. Dickey, 1921-1991. P. E. Nelson and R. K. Horst. Phytopathology 83:127. Copyright 1993 The American Phytopathological Society.
doi:10.1094/Phyto-83-127.