Sagan, Carl.
Intelligent in the universe / - 1st.Edn. / - San Francisco : Holden-Day. - xiv,509p :
0-8162-7913-9
Universe
B9 / K6
Intelligent in the universe / - 1st.Edn. / - San Francisco : Holden-Day. - xiv,509p :
0-8162-7913-9
Universe
B9 / K6