00330nam a2200133 a 450000500170000008200200001710000170003724500280005425000120008226000240009430000220011849000400014070000160018020251203091010.0  a512.74,bD, ste  aStewart, Ian  aAlgebraic number theroy  a2nd ed.  aLoNew Delhionc1987  axix, 262p, 22 cm.  aChapman and hall mathematics series  aTall, David