Extraterrestrials - where are they?
Extraterrestrials - where are they?
edited by Ben Zuckerman and Michael H. Hart
- 2nd edition
- Cambridge Cambridge University Press 1995
- xii, 239 p. tab. 23 cm
Includes references . - index
0521448034
Αστροβιολογία
Αστρονομία
94-43739
Includes references . - index
0521448034
Αστροβιολογία
Αστρονομία
94-43739