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Issue 1-2
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Article: Fortschritte in der Systematik und Floristik der Schweizerflora (Gefässpflanzen) in den Jahren 1974 und 1975
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1
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Article: Les champignons du Bois de Chênes (Genolier VD, Suisse)
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56
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Issue 3-4
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Front matter
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Table of Contents
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Article: Quelques phénomènes de polarité du pollen des Orchidaceae
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115
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Article: Einfluss der Aminosäuren Ornithin, Citrullin und Arginin auf das Wachstum von Lemna minor bei gleichzeitigem Angebot von Ammonium oder Nitrat
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129
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Article: Orchis robusta (Stephenson) Gölz et Reinhard
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136
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Article: Contribution to the Cytotaxonomy and Cytogeography of the Flora of the Western Himalayas (with an attempt to compare it with the Flora of the Alps). Part III
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152
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