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Biografie 1,363 Brief 204 Lehrbuch 194 Agriculture 93 Forests and forestry 88 Geschichte 70 Landwirtschaft 69 more ... Gartenkunst 62 Soils 48 Deutschland 44 18. Jahrhundert 41 Agricultural chemistry 41 Nachruf 38 Dissertation 37 Graphik 37 Trees 36 Horses 33 Diseases and pests 32 Gardening 30 Hunting 30 Fruit-culture 29 Plant diseases 28 Botany, Economic 27 History 27 Gardens 25 Botany 24 Philosophie 24 Early works to 1800 23 Bee culture 21 Festschrift 21 less ...