Powell, John Wesley, 1834-1902
Canyons of the Colorado [recurso electrónico] / John Wesley Powell - Project Gutenberg, 2005 - Project Gutenberg 8082 .
Public domain in the USA.
Text
Grand Canyon (Ariz.) Colorado River (Colo.-Mexico) United States -- Discovery and exploration
F786
Canyons of the Colorado [recurso electrónico] / John Wesley Powell - Project Gutenberg, 2005 - Project Gutenberg 8082 .
Public domain in the USA.
Text
Grand Canyon (Ariz.) Colorado River (Colo.-Mexico) United States -- Discovery and exploration
F786