The energy resources of the United States a field for reconstruction. This book, "The energy resources of the United States a field for reconstruction. No. 21", by Chester G. Gilbert, is a replication of a book originally published before 1919. 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.