00506nam a2200157Ia 4500003000900000008004100009040001600050080001500066100002400081245010400105260004900209300001200258490001700270650004100287650002000328IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a52-77bCHR  aChristensen, Ronald 0aWorld developments in radio astronomycRonald Christensen                                            aCaliforniabGeneral Electronic Companyc1959  av, 93p.  aRM 59 TMP-80  aAstronomy and astrophysics thesaurus  aRadio astronomy