  1989 - The Ufo Experience a Scientific Inquiry [Collector's Library of the Unknown] (Hardcover) ISBN-13: 9780809480548 ISBN-10: 0809480549 Genre: Reference ?  1972 - The Ufo Experience a Scientific Inquiry (Hardcover) ISBN-13: 9780809291304 ISBN-10: 0809291304 Genre: Nonfiction ?  The Edge of Reality a Progress Report on Unidentified Flying Objects (Hardcover) ISBN-13: 9780809282098 ISBN-10: 0809282097 ? |
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