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| NON posseduto | |
| Autore principale: | Geoffroy-Saint-Hilaire, Étienne, 1772-1844.
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| Titolo: | On the vestiges of placental organization, and of an umbilicus : discovered in a very small foetus of the Didelphis virginiana / by E. Geoffroy de Saint-Hilaire. |
| Note: | Translated from Annales de sciences naturelles Includes bibliographical references |
| In: |  Zoological journal Vol. 1 (1825), p. 403-406 |
| 000000171584 |
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