Interstellar Communication: Scientific perspectives
PONNAMPERUMA(Cyril) & CAMERON(A G W)
Interstellar Communication: Scientific perspectives - 1st ed. - Boston Houghton Mifflin Company 1974 - 226 p.
Interstellar Communication: Scientific perspectives - 1st ed. - Boston Houghton Mifflin Company 1974 - 226 p.