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Pscheidt, Jay W.
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2015-03
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- Pesticides -- Application -- Oregon -- Willamette River Valley4
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley4
- Apples -- Diseases and pests -- Control -- Oregon -- Willamette River Valley1
- Apples -- Diseases and pests -- Integrated control -- Oregon -- Willamette River Valley1
- Cherry -- Diseases and pests -- Control -- Oregon -- Willamette River Valley1
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