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The impact of the green spruce aphid Elatobium abietinum (Walker) on long-term growth of Sitka spruce in Iceland

✍ Scribed by G. Halldórsson; T. Benedikz; Ó. Eggertsson; E.S. Oddsdóttir; H. Óskarsson

No coin nor oath required. For personal study only.

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