Historical and Recent Migrations of Phytophthora infestans: Chronology, Pathways, and Implications. W. E. Fry, Cornell University, Ithaca, NY. S. B. Godwin, A. T. Dyer, and J. M. Matuszak Cornell University, Ithaca, NY; A. Drenth, Wageningen Agricultural University Netherlands; S. A. Cohen and L. J. Spielman Cornell University, Ithaca, NY; Y. J. Koh, Sunchon National University, Sunchon-Si, Republic of Korea; P. W. Tooley, USDA-ARS, Fort Detrick, Frederick, MD; L. S. Sujkowski. Potato Research Institute, Mlochow, Rozalin, Poland; K. L. Deahl, USDA-ARS, Beltsville, MD; D. A. lnglis. Washington State University, Mount Vernon; K. P. Sandlan, Cornell University, Ithaca, NY. Plant Dis. 77:653-661. Copyright 1993 The American Phytopathological Society. DOI: 10.1094/PD-77-0653.