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Xanthomonas populi. Bacterial canker of poplar. Cross-section of stem showing a. erumpent cankers b.recovered cankers c. Agromyzid tunnels just within cankers.

Reference: 2001234

Xanthomonas populi. Bacterial canker of poplar. Cross-section of stem showing a. erumpent cankers b.recovered cankers c. Agromyzid tunnels just within cankers.
Date Taken: 8th December 1964

Photographer: Barry Lambsdown
Copyright: Crown Copyright
Credit line: Forestry Commission / Barry Lambsdown

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