Meriwether Lewis; William Clark; Nicholas Biddle [https://books.google.cat/books?id=d40UAAAAYAAJ&pg=PA424History of the expedition under the command of Captains Lewis and Clark, to the sources of the Missouri, thence across the Rocky mountains and down the river Columbia to the Pacific ocean: Performed during the years 1804-5-6. By order of the government of the United
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Patricio de Salazar Real Rodríguez; Compañía de Impresores y Libreros del Reino (Madrid) Curso de historia natural aplicado a la medicina. Imp. de la Compañía de Impresores y Libreros del Reino, 1855, p. 241–.