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What We Know About Extraterrestrial Intelligence
Foundations of Xenology -
Chu ci yu shang gu li shi wen hua yan jiu
Zhongguo gu dai tai yang xun huan wen hua jie mi -
What we know about extraterrestrial intelligence
foundations of xenology -
Saules sistēmas perspektīva
= Perspective of the solar system -
On Orbit and Beyond
Psychological Perspectives on Human Spaceflight