00439nam a2200157Ia 4500008004100000020001800041082001600059100002100075245002500096250000800121260003800129300002800167500001900195600003300214650003400247240925s9999    xx            000 0 und d  a9788121900447  a520.727 PIL  aPillai, R. S. N. 0aPractical Statistics  a1st  aNew Delhi:bS. Chand & Coc,2003.  axi, 258p.bNAfOriginal  aIncludes Index  aHumanities & Natural Science  aAstronomy and allied sciences