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2. Die Formbildung der Medullaranlage bei Urodelen;Goerttler;Arch. Entwicklungsmech. Organ,1925
3. Animal Micrology;Guyer,1953
4. Animal Tissue Techniques;Humason,1962
5. Cell migration in the neural plate and the process of neurulation in the Axolotl larva;Jacobson;Zool. Bidr. Uppsala,1962