Ueber die Entwickelung der Schildkröten / Untersuchungen von Heinrich Rathke Rathke, Heinrich, 1793-1860 creator text book Braunschweig Vieweg 1848 1848
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GER Chelonia (Genus) Embryology Turtles Museum of Comparative Zoology--Biodiversity Heritage Library digitization project https://www.biodiversitylibrary.org/bibliography/5110 14838513 QL R234u 1848 10.5962/bhl.title.5110 NLM