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Åström, H. and Hæggström, C.-A. 2018. What happens with the tree rings when the bird-cherry (Prunus padus L.) is defoliated by the moth bird-cherry ermine (Yponomeuta evonymellus Linnæus, 1758)?. Memoranda Societatis pro Fauna et Flora Fennica. 94, (May 2018), 78–83.