Detalles del libro
Formato
Tapa dura
Páginas
48
Idioma
Inglés
Publicado
Jan 1, 1978
Editorial
G.P. Putnam's Sons
ISBN-10
0399610898
ISBN-13
9780399610899
Descripción
Explains that most sightings of unidentified flying objects are actually understandable phenomena and discusses the possibility of intelligent life existing elsewhere in the universe.