00521nam a2200145Ia 4500003000900000008004100009040001600050080002100066110003100087245012400118260005900242300001500301650004100316650001800357IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a017:52-73bEIN-6  aEinstein Catalog Committee 0aEinstein observatory catalog of IPC x-ray sourcesbvol. 6cEinstein Catalog Committee                                    aCambridgebSmithsonian Astrophysical Observatoryc1990  aiii, 825p.  aCatalog-Imaging Propotional Counter.  aX-Ray sources