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Picture library: 33822

Oak canker . Gall midge ( cecidomyid ) cankers and woodpecker marks on oak . Marks made in mid - summer 1976 , cankers 1976 - 1977 . Location: Crichel , Dorset , England .

Reference: 33822

Oak canker . Gall midge ( cecidomyid ) cankers and woodpecker marks on oak . Marks made in mid - summer 1976 , cankers 1976 - 1977 . Location: Crichel , Dorset , England .


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Credit line: Forestry Commission

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