On civilized stars : the search for intelligent life in outer space / Joseph F. Baugher.

Eitemau Tebyg

• The Galactic Club : intelligent life in outer space / Ronald N. Bracewell.
  gan: Bracewell, Ronald N. (Ronald Newbold), 1921-2007.
  Cyhoeddwyd: (1975)
• We are not alone ; the search for intelligent life on other worlds.
  gan: Sullivan, Walter, 1924-2006.
  Cyhoeddwyd: (1964)
• The search for life on Mars : evolution of an idea / Henry S. F. Cooper, Jr.
  gan: Cooper, Henry S. F., Jr. (Henry Spotswood Fenimore), 1933-2016.
  Cyhoeddwyd: (1980)
• Confessions of an alien hunter : a scientist's search for extraterrestrial intelligence / Seth Shostak.
  gan: Shostak, G. Seth.
  Cyhoeddwyd: (2009)
• The search for life on other planets / Bruce Jakosky.
  gan: Jakosky, Bruce M.
  Cyhoeddwyd: (1998)