Helmstadter G C <br/><br/>
Principles of psychological measurement 
Helmstadter G C 
 -  1966 
<br/><br/><label>Standard No.: </label>81,579 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PSYCHOLOGY
<br/><br/><label>Dewey Class. No.: </label>S:7:6, K63 (SD)