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Archiv für Naturgeschichte (Nicolai, 1904)

Archiv für Naturgeschichte (Nicolai, 1908)

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Beihefte zum botanischen Centralblatt Erste Abteilung Anatomie, Histologie, Morphologie und Physiologie der Pflanzen (Verlag von G. Thiem, 1917)

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Birds and nature (A.W. Mumford, Publisher, 1901)

Birds; a miscellaneous collection of 37 pamphlets about birds - Biological Society of Washington (1910-1913, 1914)

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