A Century of UFO Landings (1868-1968)
A Century of UFO Landings (compiled by Jacques Vallée, and published in his ground-breaking book Passport to Magonia)
A Century of UFO Landings (compiled by Jacques Vallée, and published in his ground-breaking book Passport to Magonia)
American Institute of Aeronautics and Astronautics (AIAA) Paper 75-42, delivered at the 13thAerospace Sciences Meeting, Pasadena, CA. (January 20-22, 1975).