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Dr. Johannes Leunis Synopsis der thierkunde. Ein handbuch für höhere lehranstalten und für alle, welche sich wissenschaftlich mit der naturgeschichte der thiere beschäftigen wollen - Leunis, Johannes, 1802 -1873 (Hahnsche buchhandlung, 1886)

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Die Elemente der Entwicklungslehre des Menschen und der Wirbeltiere : Anleitung und Repetitorium für Studierende und Aertze - Hertwig, Oscar, 1849 -1922 (G. Fischer, 1900)

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