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| NON posseduto | |
| Autore principale: | Humboldt, Alexander von, 1769-1859.
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| Titolo: | Account of the discovery of a mine of platinum in Columbia [sic] : and of mines of gold and of platinum in the Uralian Mountains / by Baron Alexander de Humboldt. |
| Note: | Includes bibliographical references |
| In: |  Edinburgh journal of science Vol. 5 (1826), p. 323-325 |
| 000000173616 |
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