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630*4 --- Forest injuries and protection --- 630*4 Forest injuries and protection --- Plant ecology. Plant sociology --- Forestry
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Pinales --- Carence minérale --- mineral deficiencies --- Forêt résineuse --- Coniferous forests --- United Kingdom --- 630*174.7 --- 630*4 --- 632.121 --- Coniferae --- Forest injuries and protection --- 630*4 Forest injuries and protection --- 630*174.7 Coniferae --- Conefers
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630*4 --- Forest injuries and protection --- PPR Plant Protection --- Fungi --- air pollution --- bacteria --- birds --- climatology --- fire --- forestry --- human impact --- insects --- mammals --- pests and diseases --- plant protection --- wounds & injuries --- 630*4 Forest injuries and protection
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Forest declines --- Congresses. --- Dépérissement des forêts --- Surveillance épidémiologique --- Forest dieback --- Tree declines --- #KVIV:BB --- 630*4 --- 630*4 Forest injuries and protection --- Forest injuries and protection --- Congresses --- forest decline --- Évaluation --- evaluation --- Identification --- identification --- Disease surveillance --- Pollution --- surveys --- forests --- evaluation. --- identification.
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Air pollution. Air purification --- Water supply. Water treatment. Water pollution --- zure regen --- Belgium --- Environnement --- Milieu --- Milieuverontreiniging --- Pollution de l'environnement --- 630*4 --- #gsdbS --- 551.577.13 --- 502.5/.7 <493> --- 504.5 --- 551.578.8 --- #C9201 --- 632.15 --- 614.623 --- Luchtverontreiniging --- Zure regen --- Forest injuries and protection --- Acid rain --- Acid rain. --- 630*4 Forest injuries and protection
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630*4 --- <2/87 --- 502 --- Forest injuries and protection --- Nature. Nature study and conservation. Nature and wildlife protection --- 502 Nature. Nature study and conservation. Nature and wildlife protection --- 630*4 Forest injuries and protection --- Forest Damage and Protection --- Forest Damage and Protection. --- Nature protection --- Forestry --- Environmental Sciences and Forestry. Forestry
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630*9 --- 630*4 --- 630*4 Forest injuries and protection --- Forest injuries and protection --- 630*9 Forests and forestry from the national point of view. Forestry policy. Afforestation policy. Social economics of forestry --- Forests and forestry from the national point of view. Forestry policy. Afforestation policy. Social economics of forestry
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Air pollution. Air purification --- Forestry --- Phanerogams --- Trees --- Forest ecology --- Soil ecology --- Effect of acid deposition on --- Nutrition --- 630*11 --- 551.577.13 --- 630*4 --- -Trees --- -Dendrology --- Nursery stock --- Woody plants --- Arboriculture --- Forests and forestry --- Timber --- Edaphology --- Ecology --- Soils --- Roots (Botany) --- Site factors. Climate, situation, soil in forestry. Forest hydrology and meteorology --- Acidity of precipitation, acid rain --- Forest injuries and protection --- Environmental aspects --- -Site factors. Climate, situation, soil in forestry. Forest hydrology and meteorology --- 630*4 Forest injuries and protection --- 551.577.13 Acidity of precipitation, acid rain --- 630*11 Site factors. Climate, situation, soil in forestry. Forest hydrology and meteorology --- -Edaphology --- Dendrology --- Forest ecosystems --- Trees - Effect of acid deposition on --- Trees - Nutrition
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Convention on Long-range Transboudary Air Pollution
630*4 --- 630*9 <4> --- 63 --- 630 --- 630 Forestry --- Forestry --- 63 Agriculture and related sciences and techniques. Forestry. Farming. Wildlife exploitation --- Agriculture and related sciences and techniques. Forestry. Farming. Wildlife exploitation --- 630*4 Forest injuries and protection --- Forest injuries and protection --- 630*9 <4> Forests and forestry from the national point of view. Forestry policy. Afforestation policy. Social economics of forestry--Europa --- Forests and forestry from the national point of view. Forestry policy. Afforestation policy. Social economics of forestry--Europa --- 63 Landbouw, veeteelt en verwante wetenschappen en technieken. Bosbouw. Landbouw. Exploitatie van dieren in het wild. --- Landbouw, veeteelt en verwante wetenschappen en technieken. Bosbouw. Landbouw. Exploitatie van dieren in het wild.
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