Welkowitz, Joan <br/><br/>
Introductory statistics for the behavioral sciences / 
Joan Welkowitz, Robert B. Ewen, Jacob Cohen. 
 - Third edition. 
 - xiii, 369 pages :  illustrations,  24 cm. 
<br/><br/> Previous edition : Orlando, Florida : Academic Press, 1982. 
<br/><br/><label>ISBN: </label>0155459813  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychometrics.