00254nam a22000977a 4500003000400000008004100004082002100045100001700066245003000083260004300113OSt230616b        |||||||| |||| 00| 0 eng d  a574.87328bST127  aDownie, N.M.  aBasic Statistical Methods  aA.R. & Sons, DelhibHarper & Rowc1970