Who's out there?: UFO encountersMayer, Ann Margaret J. Messner 0671329863 / 9780671329860 Hardcover Very Good 0671329863 SIGNED and inscribed by both authors. 1979 hardcover. No dust jacket, as published. Some light rubbing wear to cover. Owner's sticker on front inside cover. Otherwise clean and tight. Not ex-library. No markings. USPS tracking number provided for U.S. orders.