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Picture library: 2001249

Poplar mosaic virus symptoms (vein clearing) on populus trichocarpa.

Reference: 2001249

Poplar mosaic virus symptoms (vein clearing) on populus trichocarpa.
Date Taken: 4th August 1965

Photographer: Thelma Evans
Copyright: Crown Copyright
Credit line: Forestry Commission / Thelma Evans

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