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Personal Narrative of Travels to the Equinoctial Regions of America, During the Years 1799-1804, by Alexander Von Humboldt and Aimé Bonpland

出版	Longman, Hurst, Rees, Orme, and Brown, 1814
URL	http://books.google.com.hk/books?id=EplAzwEACAAJ&hl=&source=gbs_api