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  1. 1
    by Swedjemark, Gunilla
    Published 1995
    Subjects “...Norway spruce Diseases and pests....”
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    Heterobasidion annosum root rot in Picea abies : variability in aggressiveness and resistance /
  2. 2
    by Vollbrecht, Gudmund
    Published 1994
    Subjects “...Norway spruce Diseases and pests Denmark....”
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    Effects of silvicultural practices on the incidence of root and butt rot in Norway spruce with special emphasis on Heterobasidion annosum /

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