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ספרים בחינם

Ancient Landscapes of the Grand Canyon Region The Geology of Grand Canyon, Zion, Bryce, Petrified Forest & Painted Desert

Edwin D. (Edwin Dinwiddie) McKee · 2015

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Geology -- Arizona -- Grand Canyon National ParkGeology -- Utah -- Bryce Canyon National ParkGeology -- Utah -- Zion National Park