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Picture library: 2004669

Ceratocystis ulmi.  English elm showing progression of disease by root transmission.

Reference: 2004669

Ceratocystis ulmi. English elm showing progression of disease by root transmission.
Date Taken: 15th September 1973

Photographer: B. J. W. Greig
Copyright: Crown Copyright
Credit line: Forestry Commission / B. J. W. Greig

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