Unacknowledged : An Expose of the World’s Greatest Secret by Steven Greer (2017,
„Unacknowledged: An Expose of the World’s Greatest Secret“ by Steven Greer is a hardcover book published by A&M Publishing LLC in 2017. The book, written in English, delves into the world of technology and engineering, specifically exploring the secrets of the United States in that field. With 352 pages and illustrations, the book presents a comprehensive look at the lesser-known aspects of American technological advancements. Steven Greer’s insightful analysis and in-depth research make this book a compelling read for those interested in the mysteries of the world’s greatest secret.