Kraemer, Helena Chmura <br/><br/>
How many subjects?  : statistical power analysis in research 

 - Newbury Park:  Sage Publications,  1991. 
 - 120p. 
<br/><br/><label>ISBN: </label>0803929498 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research-Stastical methods.
<br/><br/><label>Dewey Class. No.: </label>001.422  / KRH