Henkel Ramon E. <br/><br/>
Tests of significance 

 - London  Sage Publications UK         1976 
 - 92p.  cm. 
<br/><br/><label>Standard No.: </label>90686 
<br/><br/><label>Source: </label> Textbook 
<br/><br/><label>Dewey Class. No.: </label>B2813, L6