http://book.klll.cc/ebooks/subject/6417.opds?sort_order=title 2025-08-07T06:43:41Z Books about Unidentified flying objects (sorted alphabetically) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-07T06:43:41Z https://book.klll.cc/ebooks/subject/6417.opds?sort_order=release_date Sort by Release Date 2025-08-07T06:43:41Z https://book.klll.cc/ebooks/subject/6417.opds?sort_order=downloads Sort by Popularity 2025-08-07T06:43:41Z https://book.klll.cc/ebooks/25706.opds Federal Bureau of Investigation FOIA Documents - Unidentified Flying Objects United States. Federal Bureau of Investigation 2025-08-07T06:43:41Z https://book.klll.cc/ebooks/5883.opds Flying Saucers are Real Donald E. Keyhoe 2025-08-07T06:43:41Z https://book.klll.cc/ebooks/5884.opds Flying Saucers are Real Donald E. Keyhoe 2025-08-07T06:43:41Z https://book.klll.cc/ebooks/17346.opds Report on Unidentified Flying Objects Edward J. Ruppelt 2025-08-07T06:43:41Z https://book.klll.cc/ebooks/25674.opds USAF Fact Sheet 95-03 United States. Air Force 2025-08-07T06:43:41Z https://book.klll.cc/ebooks/66639.opds World of Flying Saucers: A Scientific Examination of a Major Myth of the Space Age Donald H. Menzel and Lyle Gifford Boyd