Cohen , Jacob <br/><br/>
Statistical power analysis for the behavioral sciences / 
Jacob Cohen 
 - London :  Academic press ;  1977 
 - 474 p. :  Ill. ;  20 cm. 
<br/><br/><label>ISBN: </label>0121790606 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistical methods
<br/><br/><label>Dewey Class. No.: </label>300.18  / COH N77S