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Artículo Wikipedia
Philemon Beecher Van Trump (1839–1916), also known as P. B. Van Trump, was an American pioneering mountaineer and writer who lived in the state of Washington. He is best known for the first ascent of ...
Artículo Wikipedia
David Bates Douglass (March 21, 1790 – October 21, 1849) was a civil and military engineer, who worked on a broad set of projects throughout his career. For fifteen years he was a professor at the Uni ...
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