00461nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001500084100002100099245007500120260004800195300001500243650002000258700002500278IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-43712-1  cIIA Library  a52-73bCHA  aCharles,Philip A 0aExploring the x-ray universecPhilip A Charles  and Frederick D Seward  aCambridgebCambridge University Pressc1995  axvi, 398p.  aX-ray astronomy  aSeward, Frederick D.