Statistic : For the behavioral and social sciences 
Aron, Arthur. 
 - International edition. 
 -  Prentice Hall, Inc.  1997 
 - 329 pages. 
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<br/><br/><label>ISBN: </label>0-13-613795-4 
<br/><br/><label>Dewey Class. No.: </label>519.5 Ar6s 1997