00274nam a2200109Ia 4500082002400000100002100024245005000045260004400095300001500139500000500154700000500159  a519.502437bL747.SA  aLindquist, E. F.  aStatistics analysis in educational researchb  aCalcuttabOxford University Pressc1970  axii, 266p.  a  a