00314nam a2200121Ia 4500082001900000100002000019245003000039260003400069300001400103490006500117500000500182700000500187  a512.7bL849.AN  aLong, Robert L.  aAlgebraic number theoryb  aNew YorkbMarcel Dekkerc1977  aix, 192p.  aMonograph and textbooks in Pure and Applied Mathematicsv 41  a  a