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La pessière wallonne: son évolution entre 1980 et 1990. ; Evolution of the Walloon spruce stands between 1980 and 1990.
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Abu Sa'id Ibn Sayyid Al-Dar Ibn Abi Al-Fadl ; The Coptic encyclopedia, volume 1
Assessing the potential of natural woody species regeneration for the conversion of Norway spruce plantations on alluvial soils
Herbarium specimen image of Picea abies (L.) H.Karst., part of the collection of Meise Botanic Garden
Herbarium specimen image of Abies grandis Lindl., part of the collection of Meise Botanic Garden
Mekkî b. Ebî Tâlib ve el-İbâne an Meâni'l-Kırâât adlı eseri ; Makki ibn Abu Talib and his work al-Ibna 'an Ma'n al-Qira'at
Distance-independent tree basal area growth models for Norway spruce, Douglas-fir and Japanese larch in Southern Belgium
Element removal in harvested tree biomass: scenarios for critical loads in Wallonia, south Belgium