The American Phytopathological Society (APS) is a non-profit, professional, scientific organization dedicated to the study and control of plant diseases.
James Herbert Jensen, 1906-1993. R. A. Young and A. Kelman. Phytopathology 84:112.
Copyright 1994 The American Phytopathological Society. doi:10.1094/Phyto-84-112.