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- You have accessRestricted accessSpatial Distribution of Pierce’s Disease in the Coachella Valley: Implications for SamplingYong-Lak Park, Thomas M. Perring, Rayda K. Krell, Charles A. Farrar, Carmen GispertAm J Enol Vitic. 2006 57: 220-225 ; DOI: 10.5344/ajev.2006.57.2.220Yong-Lak Park1Postdoctoral research associate, 2Professor, 3Staff research associate, Department of Entomology, University of California, Riverside, CA 92521; 4Viticulture Advisor, University of California Cooperative Extension, Indio, CA 92201.Thomas M. Perring1Postdoctoral research associate, 2Professor, 3Staff research associate, Department of Entomology, University of California, Riverside, CA 92521; 4Viticulture Advisor, University of California Cooperative Extension, Indio, CA 92201.Rayda K. Krell1Postdoctoral research associate, 2Professor, 3Staff research associate, Department of Entomology, University of California, Riverside, CA 92521; 4Viticulture Advisor, University of California Cooperative Extension, Indio, CA 92201.Charles A. Farrar1Postdoctoral research associate, 2Professor, 3Staff research associate, Department of Entomology, University of California, Riverside, CA 92521; 4Viticulture Advisor, University of California Cooperative Extension, Indio, CA 92201.Carmen Gispert1Postdoctoral research associate, 2Professor, 3Staff research associate, Department of Entomology, University of California, Riverside, CA 92521; 4Viticulture Advisor, University of California Cooperative Extension, Indio, CA 92201.