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  1. 1
    per Eriksson, Hillevi M.
    Publicat 1996
    Thesis Llibre
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    Effects of tree species and nutrient application on distribution and budgets of base cations in Swedish forest ecosystems /
  2. 2
    per Hagner, Stig Olof
    Publicat 1967
    Llibre
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    Guardat en:
    Fertilization as a production factor in industrial forestry /

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