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Proposed Nomenclature for Pathogenic Races of Exserohilum turcicum on Corn. K. J. Leonard, USDA-ARS Cereal Rust Laboratory, University of Minnesota, St. Paul 55108; Y. Levy, Department of Life Sciences, Bar-llan University, 52 100 Ramat Gan, Israel; and D. R. Smith, DeKalb-Pfizer Genetics, 3100 Sycamore Road, DeKalb, IL 60115. Plant Dis. 73:776-777. Copyright 1989 The American Phytopathological Society.