00328nam a2200121 a 450000500170000002000140001708200160003110000210004724500280006826000290009630000280012549000530015320251203110738.0  a350653996  a512.74bNEU  aNeukirch, Jurgen  aAlgebraic number theory  aNew YorkbSpringerc1999  axviii, 571p.c26 cm. HB  aA Series of Comprehensive Studies in Mathematics