1997 1st edition (mfg. code 10-1); SmithMark Publishers, New York; hardbound; very good condition with unmarked pages; dust jacket very good.
 
Description -
This fascinating book examines first-hand testimony, radar, photographic and other documentary evidence reported dispassionately by aviation personnel from many different countries. With an overview of the history of UFO observation, government documents previously withheld from the public, and over 100 photographs, maps, and illustrations, UFO provides the hard evidence about what might lie just beyond our own small world.