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Letter to the Editor

Multilines and Super-Races–a Reply. J. A. Barrett, Senior Assistant in Research, Department of Genetics, University of Cambridge, Downing Street, Cambridge, England; M. S. Wolfe, Head, Department of Pathology and Entomology, Plant Breeding Institute, Maris Lane, Trumpington, Cambridge, England. Phytopathology 68:1535-1537. Accepted for publication 9 June 1978. Copyright © 1978 The American Phytopathological Society, 3340 Pilot Knob Road, St. Paul, MN 55121. All rights reserved.. DOI: 10.1094/Phyto-68-1535.