00259nam a2200109Ia 4500020001500000082001600015100001500031245002400046250001400070260004100084650002400125  a8170140072  a519.5 GUP/S  aGupta, S.C 0aStatistical Methods  a28 TH ED.  bSultan Chand & SonsaNew Delhic1999  aStatistical Methods