کتاب‌های John Wesley Powell - BookPine

A Canyon Voyage: The Narrative of the Second Powell Expedition Down the Green-Colorado River From Wyoming, and the Explorations On Land, in the Years 1871 and 1872

A Canyon Voyage: The Narrative of the Second Powell Expedition Down the Green-Colorado River From Wyoming, and the Explorations On Land, in the Years 1871 and 1872

Frederick Samuel Dellenbaugh

The exploration of the Colorado River and its canyons 1961 [Leather Bound]

The exploration of the Colorado River and its canyons 1961 [Leather Bound]

John Wesley Powell