- Year: 1895
- Volume: 13/2
- pag: 269
- Category: Botanik: Verschiedenes
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- Year: 1900
- Volume: 16/3
- pag: 430
- Category: Botanik: Vegetationskunde
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- Year: 1908
- Volume: 19/2
- pag: 298
- Category: Botanik: Verschiedenes
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- Year: 1905
- Volume: 18/1
- pag: 99
- Category: Botanik: Verschiedenes
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- Year: 1908
- Volume: 19/2
- pag: 290
- Category: Botanik: Verschiedenes
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