Exploration of North America

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871	PDF Document Add to Reading List Source URL: exploration.vanderbilt.edu Language: English - Date: 2003-11-07 18:30:59 Geography of North America Tajal Chan Ahk Maya civilization Arthur Demarest Pasión River History of North America Last Days of the Maya Machaquila Petén Department Americas Cancuén
872	PDF Document Add to Reading List Source URL: www.fas.org Language: English - Date: 2007-08-13 11:20:32 San Mateo County California United States Geological Survey Common Access Card Exploration of North America Geography Geology
873	PDF Document Add to Reading List Source URL: pubs.aina.ucalgary.ca Language: English - Date: 2006-12-08 14:30:09 Chukchi Sea Vilhjalmur Stefansson Ulukhaktok Christian Klengenberg Diamond Jenness Canadian Arctic Expedition 1913–1916 Copper Inuit Inuit Exploration Canada History of North America
874	PDF Document Add to Reading List Source URL: gsahist.org Language: English - Date: 2010-12-07 20:14:17 Geological Exploration of the Fortieth Parallel Geology California Geological Survey Josiah Whitney History of North America Ferdinand Vandeveer Hayden United States Samuel Franklin Emmons Alfred Hulse Brooks Clarence King Sierra Nevada Geological surveys