Forests and forestry Fore^ts 5 Research 2 Agricultural engineering 1 Agriculture 1 Arbres 1 Arbres, Effets de la pollution de l'air sur les 1 Aspect de l'environnement 1 Biodiversity 1 Data processing 1 Diseases and pests 1 Effect of air pollution on 1 Environmental aspects 1 Forest ecology 1 Forest products 1 Forstwirtschaft 1 Maladies et fle ́aux 1 Mathematical models 1 Sylviculture 1 Trees 1 Urban forestry 1 Waldkrankheit 1