00355nam a2200133 a 450000500170000008200150001710000220003224500330005425000170008726000360010430000260014049000370016663000180020320251202164142.0  a512.7bDAV  aDavenport, Harold  aMultiplicative number theory  a2nd  rev.ed.  aNew YorkbSpringer-Verlagc1980  aix, 177p.b22 cm.cHB  aGraduate text in mathematicsd74  aNumber theory