00568nam a2200157Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library 017:52-73 EIN-7 Einstein Catalog Committee 21189 Einstein observatory catalog of IPC x-ray sources vol. 7 Einstein Catalog Committee Cambridge Smithsonian Astrophysical Observatory 1990 iii, 510p. X-ray sources, Catalog-Imaging propotional counter. 21190 BK 12148 12148 0 0 0 0 BAN BAN GEN 1997-07-08 0 017:52-73/ EIN-7 13064 2021-11-05 1997-07-08 BK