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Leach, J. G. (Julian Gilbert), b. 1894.
Remove constraint All Creators: Leach, J. G. (Julian Gilbert), b. 1894.
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Beans--Diseases and pests.
Remove constraint All Subjects: Beans--Diseases and pests.
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Fire-blight.
Remove constraint All Subjects: Fire-blight.
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Plant exudates.
Remove constraint Subject Topical: Plant exudates.
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