00373nam a2200133Ia 4500008004100000082002300041100001900064245002400083260002800107300001000135490004000145700002800185700002600213260610b        |||||||| |||| 00| 0 eng d  a519.50182bG822.BS  aGregory, A. H.  aBasic statisticsb/  aLondon:bMethuen,c1969  a170p.  aMethuen's clearway programmed books  aHartley, J. R.eauthor.  aLewis, D. G.eauthor.