00577nam a2200181Ia 4500003000900000008004100009020001800050040001600068080001500084100002600099245009700125260003500222300001000257650002800267650003500295650004300330700002200373IN-BaIIA211028s9999    xx            000 0 eng d  a0-395-17809-6  cIIA Library  a52-37bPON  aPonnamperuma, Cyril A 0aInterstellar communicationbscientific perspectivescC. A. Ponnamperuma and A. G. W. Cameron  aBostonbHoughton Mifflinc1974  a226p.  a Extraterrestrial life  a Interstellar communication   aAstronomy and astrophysics thesaurus   aCameron, A. G. W.