00294nam a2200109 a 450000500170000008200150001710000180003224500620005026000260011230000180013863000280015620251202164124.0  a519.5bAGG  aAggarwal, Y.P  aStatistical methodsbconcepts,application and computation  aDelhibSterlingc1986  a376 p.b24 cm  aMathematical statistics