00261nam a22000977a 4500003000400000008004100004082001500045100002600060245002300086260005400109OSt230616b        |||||||| |||| 00| 0 eng d  a336bSt140  aFisher: R.A. & Yatesf  aStatistical Tables  aShanker's Book Agency, DelhibOliver & Boydc1970