On the superficial geology of the central region of North America This book, "On the superficial geology of the central region of North America", by George M. Dawson, is a replication of a book originally published before 1875. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.