Leonard G. Cramp's classic book on flying saucer propulsion and suppressed technology is back in print in this expanded edition. Now including material from his first book; Space; Gravity & the Flying Saucer; this book is a highly technical look at the UFO phenomena by a trained scientist. Cramp first introduces the idea of 'anti-gravity' and introduces us to the various theories of gravitation. He then examines the technology necessary to build a...