00502nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001700084100002100101245011400122260004100236300001000277650004100287650001600328IN-BaIIA211028s9999    xx            000 0 eng d  a0-446-93677-4  cIIA Library  a524.882bSUL  aSullivan, Walter 0aBlack holesbthe edge of space, the end of timecWalter Sullivan                                               aU.S.AbA Warner Communicationsc1979  a350p.  aAstronomy and astrophysics thesaurus  aBlack holes