Humboldt, Alexander von 1769-1859 Cosmos: a Sketch of a Physical Description of the Universe Humboldt, Alexander von 1769-1859 Humbolt's Travels and Discoveries in South America Humboldt, Alexander von 1769-1859 Cosmos: a Sketch of a Physical Description of the Universe Humboldt, Alexander von 1769-1859 Personal Narrative of Travels to the Equinoctial Regions of the New Continent During the Years 1799-1804; 2 Humboldt, Alexander von 1769-1859 Political Essay on the Kingdom of New Spain ..; v.2 Humboldt, Alexander von 1769-1859 Researches Concerning the Institutions & Monuments of the Ancient Inhabitants of America: With Descriptions & Views of Some of the Most Striking Scenes in the Cordilleras!; v. 1-2 (1814) Humboldt, Alexander von 1769-1859 Cosmos: Ensayo de una descripciâon fâisica del mundo; 2 Humboldt, Alexander von 1769-1859 Humbolt's Travels and Discoveries in South America Kendall, James 1769-1859 Sermon, Delivered Before the Society for Propagating the Gospel Among the Indians and Others in North America, at Their Anniversary, November 7, 1811 [microform] Humboldt, Alexander von 1769-1859 Cosmos: A Survey of the General Physical History of the Universe DE TERRA, HELMUT HUMBOLDT THE LIFE AND TIMES OF ALEXANDER VON HUMBOLDT 1769-1859 Humboldt, Alexander von 1769-1859 Cosmos: Ensayo de una descripciâon fâisica del mundo; 2
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