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| POSSEDUTO (se manca la collocazione vai al documento contenente) | |
| Autore principale: | Humboldt, Alexander von, 1769-1859.
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| Titolo: | On petrifactions, or fossil organic remains / by Baron Alexander Humboldt. |
| Note: | Translated from: Essai geognostique sur le gisement des roches dans les deux-hemispheres Includes bibliographical references |
| In: |  Edinburgh philosophical journal Vol. 9 (1823), p. 20-35 |
| 000000171308 |
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