00277nam a2200097Ia 4500008004100000082001500041245006500056260003800121300001000159650001000169060110s9999    xx            000 0 und d  a512.7bNUM  aNumber theorycEd by R.P Bambah, V.C Dumir and R.J Hans-Gill  bHindustan Publishing Agencyc2000  a527p.  a512.7