Extraterrestrials - where are they?

• Other Authors: Hart, Michael H., Zuckerman, Ben
• Format: Book
• Language: English
• Published: Cambridge Cambridge University Press 1995
• Edition: 2nd edition
• Subjects: Αστροβιολογία; Αστρονομία
• Physical Description: xii, 239 p. tab. 23 cm
• ISBN: 0521448034