00517nam a2200145Ia 4500003000900000008004100009040001600050080002100066110003100087245012200118260005900240300001300299650004100312650001800353IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a017:52-73bEIN-1  aEinstein Catalog Committee 0aEinstein observatory catalog of IPC x-ray sourcesbvol. 1cEinstein Catalog Committee                                  aCambridgebSmithsonian Astrophysical Observatoryc1990  av, 507p.  aCatalog imaging propotional counter.  aX-Ray sources