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Letter to the Editor

Rebuttal to “Multilines and Super-Races – a Reply”. J. V. Groth, Assistant professor, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108; Phytopathology 68:1538-1539. Accepted for publication 4 October 1978. Copyright © 1978 The American Phytopathological Society, 3340 Pilot Knob Road, St. Paul, MN 55121. All rights reserved.. DOI: 10.1094/Phyto-68-1538.