UFOs of the First World War: Phantom Airships, Balloons, Aircraft and Other Mysterious Aerial Phenomena: Watson, Nigel: 9780750959148: Amazon.com: Books
UFOs - Generäle, Piloten und Regierungsvertreter brechen ihr Schweigen: Kean, Leslie: 9783864456657: Amazon.com: Books
Amazon.com: Sie waren nie fort - UFO-Phänomene einst und heute (German Edition) eBook : Appel, Michael, Krassa, Peter: Kindle Store
Amazon.com: Monsters in the Dark: The Making of X-COM: UFO Defense (Audible Audio Edition): David L. Craddock, Callum Janes, David L. Craddock: Books
UFO-Glasnost. Ein Geheimnis wird enthüllt.: 9783784423333: Amazon.com: Books
Amazon.com: The UFO Singularity: Why Are Past Unexplained Phenomena Changing Our Future? Where Will Transcending the Bounds of Current Thinking Lead? How Near is the Singularity?: 9781601632401: Hanks, Micah: Books
Researching a Real UFO: A Practical Guide to WCUFO Experimentation for Young Scientists: Zahi, Rhal, Lock HonFSAI, Christopher: 9781530050451: Amazon.com: Books
The Anatomy of a Flying Saucer: Detailed Scientific Explanation of How UFOs Work: Mike, John: 9781463598068: Amazon.com: Books
UFOs über Rumänien: Farcas, Dan D.: 9783956522406: Amazon.com: Books
Amazon.com: The UFO Phenomenon (Mysteries of the Unknown): 9780809463244: George Constable: Books
DARK FILES: A Pictorial History of Lost, Forgotten and Obscure UFO Encounters: Schratt Mr, Michael H: 9780578369266: Amazon.com: Books
Monsters in the Dark: The Making of X-COM: UFO Defense - Kindle edition by Craddock, David L., Kim, Adrian Doan. Humor & Entertainment Kindle eBooks @ Amazon.com.
Amazon.com: UFOs, Area 51, and Government Informants: A Report on Government Involvement in UFO Crash Retrievals: 9781482069389: Grant Cameron, T. Scott Crain: Books
Kontakt : UFO-Entführungen in Deutschland, Österreich und der Schweiz ; Augenzeugen berichten: 9783426771945: Amazon.com: Books
UFOs: Sichtungen seit 1945: Schwede, Frank: 9783613037205: Amazon.com: Books