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Other Damage Agents (9)
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    Decline Complexes (2)
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    Unknown biotic damage agent (8)
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Forestry: Hardwood

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Subject Scientific Name Images
burl and decay 9
defoliation due to unknown cause 5
dieback 3
galls 16
leaf scorches 7
lignotubers 2
sycamore dieback 3
tracheomycosis 3
unknown fungi 1
witches' broom 5

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