00569cam a2200205 a 4500020001500000040000800015082002600023100002100049245005800070250001200128260005200140300004500192500002000237650002000257650001900277650001400296650001400310700002100324700001800345  a0155459872  cDLC00a519 HAR 1991 A024 Or.1 aWelkowitz, Joan.10aIntroductory statistics for the behavioral sciences /  a4th ed.  aSan Diego :bHarcourt Brace Jovanovich,cc1991.  axv, 391 p. :bill. (some col.) ;c25 cm.  aIncludes index. 0aSocial sciences 0aPsychometrics. 0aSociology 0aEducation1 aEwen, Robert B.,1 aCohen, Jacob,