KRAEMER, Helena.Chmura <br/><br/>
How many Subjects?  Statistical power anaysis in research 
Helena Chmura Kraemer 
 - Newbury Park  Sage  c1987 
 - 120p.:  table 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0803929498 
<br/><br/><label>Dewey Class. No.: </label>001.4