00273nam a22000977a 4500003000400000008004100004082001900045100001800064245004500082260004800127OSt230615b        |||||||| |||| 00| 0 eng d  a574.192bST115  aFisher, R. A.  aStatistical Methods for Research Workers  aBeshan Singh, DehradunbOliver & Boydc1970