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Letter to the Editor

A Reply to the Comments of S. M. Tavantzis. A. T. Jones, Principal research scientist, Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA Scotland and Institute of Virology, Oxford, OX1 3SR, England; J. I. Cooper, principal research scientist, Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA Scotland and Institute of Virology, Oxford, OX1 3SR, England. Phytopathology 74:381. . Copyright 1984 The American Phytopathological Society. DOI: 10.1094/Phyto-74-381.