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              | Artikel: Biosystematic investigation in the family of duckweeds ("Lemnaceae"). Vol. 2 : the family of "Lemnaceae" : a monographic study. Volume 1 
                  
                    
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              | Titelseiten 
                  
                    
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              | Kapitel : Publications on "Biosystematic investigations in the family of duckweeds (Lemnaceae) 
                  
                    
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              | Inhaltsverzeichnis 
                  
                    
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              | Kapitel 1: Introduction 
                  
                    
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              | Kapitel 2: Morphological characteristics : variability and function 
                  
                    
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              | Kapitel 3: Karyology 
                  
                    
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              | Kapitel 4: Habitat demands and ecological behavior 
                  
                    
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              | Kapitel 5: Position within the ecosystem 
                  
                    
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              | Kapitel 6: Geographic distribution : distribution pattern 
                  
                    
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              | Kapitel 7: Systematic position, taxonomical relations, species differentiation 
                  
                    
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              | Kapitel 8: Nomenclature 
                  
                    
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              | Kapitel 9: Description of family, genera, and species of Lemnaceae with key for determination 
                  
                    
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              | Register: Abbreviations 
                  
                    
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              | Register: List of the figures and plants in volume 1 
                  
                    
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              | Register: Index of subjects and names of plants 
                  
                    
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              | Register: Contents of vol. 2 
                  
                    
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              | Register: Veroeffentlichungen des Geobotanischen Institutes der Eidg. Techn. Hochschule, Stiftung Ruebel, in Zuerich 
                  
                    
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