00255nam a2200121Ia 4500082001900000100001700019245003000036250000800066260002800074300002100102500000500123700000500128  a512.7bW429.AN  aWeiss, Edwin  aAlgebraic number theoryb  a2nd  aNew YorkbChelseac1976  axii, 275p. Index  a  a