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Questions before ordering? Use this form to request more information from Lems Bookshop About Craters, Caverns and Canyons; Delving Beneath the Earth's Surface.
Starting with the Earth's early history when the planet was bombarded by asteroids and comets the author details historic impacts and their geologic aftereffects, examines the formation of caves and major basins, and explains erosion's part in the creatio…