Statistical analysis in psychology and education 
Ferguzon, George A. 
 - Sixth edition. 
 -  McGraw-Hill Book Comppany.  1989 
 - x, 587 pages. 
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<br/><br/><label>ISBN: </label>0-07-100438-6 
<br/><br/><label>Dewey Class. No.: </label>370 F38s 1989