KRAEMER,Helena Chmura <br/><br/>
How many subject?:  statistical power analysis in research/ 
Helena Chmura Kraemer 
 - London:  Sage Publication,  c1987 
 - 120p.:  charts; 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0803929498 
<br/><br/><label>Dewey Class. No.: </label>001.4