The Story of American Coals (Classic Reprint) William Jasper Nicolls

Excerpt from The Story of American Coals

This Second Edition has been carefully revised and brought up to date. since the first was issued the United States has passed from the second place in coal production to the head of all other nations. From Это и многое другое вы найдете в книге The Story of American Coals (Classic Reprint) (William Jasper Nicolls)