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Author:Castagnoli, S. and Hirnyck, Ronda E. and Olsen, Jeff L. and Oregon State University. Extension Service and Spotts, Robert Allen, 1945- Subject:Apples -- Diseases and pests -- Control -- Columbia River Valley and Fruit -- Diseases and pests -- Control -- Columbia River Valley and Spraying and dusting in agriculture -- Columbia River Valley Material Types:Article
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