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Creator Personal Names
Barnett, H. L. (Horace Leslie), 1909-
Remove constraint Creator Personal Names: Barnett, H. L. (Horace Leslie), 1909-
All Creators
Lilly, Virgil Greene, b. 1900.
Remove constraint All Creators: Lilly, Virgil Greene, b. 1900.
Subject Topical
Plant diseases.
Remove constraint Subject Topical: Plant diseases.
Subject Topical
Plant spores.
Remove constraint Subject Topical: Plant spores.
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