00261nam a2200109Ia 4500008004000000082001500040100001700055245002500072250000500097260003400102300001500136210210b1983   xxu||||| |||| 00| 0 eng d  a519.5 GUPS  aGUPTA (S P).  aStatistical methods.  a  aNDbSultan Chand & Sonsc1983  axxiii,....