00685nam a2200181Ia 4500003000900000008004100009020001800050040001600068080001600084245011200100260004800212300001600260650004300276700003000319942000700349999001700356952013000373IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-41651-5  cIIA Library  a52-735bTHE 4aThe X-ray backgroundcedited by X. Barcons and A. C. Fabian                                                  aCambridgebCambridge University Pressc1992  axiii, 310p.  aX-rays, Cosmic x-rays, Universe922116  aFabian, A. C., ed.917109  cBK  c12622d12622  00104070aBANbBANcGENd1998-08-06eTBH   g885.00l0o52-735/ THEp13539r2021-11-05v885.00w1998-08-06yBKGRs. 885.00