Lingua: Inglese
Editore: W.W. Norton & Company, New York NY, 1972
ISBN 10: 0393007391 ISBN 13: 9780393007398
Da: Longs Peak Book Company, Loveland, CO, U.S.A.
Prima edizione
Soft cover. Condizione: Very Good. 1st Edition. The high point of Sagan's treatment of the UFO question was the AAAS's symposium in 1969. A wide range of educated opinions on the subject were offered by participants, including not only proponents like James McDonald & J. Allen Hynek but also skeptics like astronomers Wm Hartmann & Donald Menzel. The roster of speakers was balanced With physicist Thornton Page, Sagan edited the lectures & discussions given at the symposium. Amazon. This copy is a very good softcover copy with no defects and a bright cover. The book will be carefully wrapped and boxed for safe shipping.