00341nam a2200121 a 450000500170000002000150001708200160003210000240004824500240007226000480009630000250014449000500016920251203110154.0  a0521458269  a512.22bASC  aAschbacher, Michael  aFinite group theory  aCambridgebCambridge University Pressc1993  aix,274p.c23 cm P.B.  aCambridge studies in advanced mathematicsd10