00331nam a2200121Ia 4500020001800000082001600018100001500034245007200049250001400121260004100135300000900176650002400185  a9788180544613  a519.5 GUP/E  aGupta, S.P 0aElementary Statistical Methods : Vol-1 Text-cum-Assignment Material  a17 TH ED.  bSultan Chand & SonsaNew Delhic2008  a762p  aStatistical Methods