EXTRATERRESTRIAL INTELLIGENCE - The Copernican Principle and the Abundance of Extraterrestrial Civilizations
Journal of the British Interplanetary Society ; 54 , 11-12 ; 424-426
2001
Article (Journal)
English
Tsiolkovsky and extraterrestrial intelligence
British Library Conference Proceedings | 2000
|Tsiolkovsky and extraterrestrial intelligence
Online Contents | 2000
|NASA's Search for Extraterrestrial Intelligence
NTRS | 1988
|