00647nam a2200205Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d 0-395-17809-6 IIA Library 52-37 PON Ponnamperuma, Cyril A 8785 Interstellar communication scientific perspectives C. A. Ponnamperuma and A. G. W. Cameron Boston Houghton Mifflin 1974 226p.  Extraterrestrial life 8786  Interstellar communication  8787 Astronomy and astrophysics thesaurus  1143 Cameron, A. G. W. BK 4903 4903 0 0 0 0 BAN BAN GEN 1976-08-23 0 52-37/ PON 5487 2021-11-05 1976-08-23 BK 6.50