00462nam a2200145Ia 4500003000900000008004100009020001800050040001600068080001600084100002000100245010600120260004800226300001500274650002700289IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-47911-8  cIIA Library  a524.64bPET  aPeterson, B. M. 3aAn introduction to active galactic nucleicB. M. Peterson                                              aCambridgebCambridge University Pressc1997  axvi, 238p.  aactive galactic nuclei