Spencer, John & Evans, Hilary books & textbook
Phenomenon: Forty Years of Flying Saucers
Avon Books /1989-01-01 Paperback / 413 Pages
isbn-10: 0380706547 / isbn-13: 9780380706549
UFOs, 1947-1987: The 40-year search for an explanation
John Spencer Hilary Evans Martin Shough
Fortean Tomes /1987T Paperback / 384 Pages
isbn-10: 1870021029 / isbn-13: 9781870021029
Phenomenon: From Flying Saucers to UFOs Forty Years of Facts and Research
Futura Publications /1988T Paperback
isbn-10: 0708836550 / isbn-13: 9780708836552
