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The product is a vintage softcover book titled "Helicopters 1900-1960" by author Bill Gunston, published by Phoebus Publishing in 1977 during the 1970s. The book is written in English and focuses on the history of helicopters from 1900 to 1960, making it a valuable resource for those interested in military history and aviation. With a vintage feel and a specific focus on the era of World War II, this book offers a unique insight into the development and use of helicopters during this significant time period.