http://www.gutenberg.org/ebooks/subject/6417.opds 2024-11-06T12:41:14Z Books about Unidentified flying objects (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://www.gutenberg.org webmaster@gutenberg.org https://www.gutenberg.org/gutenberg/favicon.ico 25 1 2024-11-06T12:41:14Z https://sendtokindle.compellingsciencefiction.com/ebooks/subject/6417.opds?sort_order=title Sort Alphabetically by Title 2024-11-06T12:41:14Z https://sendtokindle.compellingsciencefiction.com/ebooks/subject/6417.opds?sort_order=release_date Sort by Release Date 2024-11-06T12:41:14Z https://sendtokindle.compellingsciencefiction.com/ebooks/17346.opds The Report on Unidentified Flying Objects Edward J. Ruppelt 2024-11-06T12:41:14Z https://sendtokindle.compellingsciencefiction.com/ebooks/5883.opds The Flying Saucers are Real Donald E. Keyhoe 2024-11-06T12:41:14Z https://sendtokindle.compellingsciencefiction.com/ebooks/66639.opds The World of Flying Saucers: A Scientific Examination of a Major Myth of the Space Age Donald H. Menzel and Lyle Gifford Boyd 2024-11-06T12:41:14Z https://sendtokindle.compellingsciencefiction.com/ebooks/25706.opds Federal Bureau of Investigation FOIA Documents - Unidentified Flying Objects United States. Federal Bureau of Investigation 2024-11-06T12:41:14Z https://sendtokindle.compellingsciencefiction.com/ebooks/25674.opds USAF Fact Sheet 95-03 United States. Air Force 2024-11-06T12:41:14Z https://sendtokindle.compellingsciencefiction.com/ebooks/5884.opds The Flying Saucers are Real Donald E. Keyhoe