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Home → Publications → Seed and Seedling Diseases in the Western US → Variability in Virulence of Heterobasidion annosum Isolates from Ponderosa and Jeffrey Pine in Area of High and Low Photochemical Air Pollution

Variability in Virulence of Heterobasidion annosum Isolates from Ponderosa and Jeffrey Pine in Area of High and Low Photochemical Air Pollution


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Author(s): USDA Forest Service