00283nam a2200121 a 450000500170000008200150001710000180003224500220005025000120007226000310008430000280011563000180014320251203091010.0  a512.7bMAT  aMathews, G B.  aTheory of numbers  a2nd ed.  aNew YorkbChelseac|19--|?  axii, 323p.b22 cm.cHB.  aNumber theory