Helmstadter, G. C. <br/><br/>
Principles of psychological measurement / 
G. C. Helmstadter 
 - New York :  Appleton-Century-Crofts,  1964 
 - xx, 248 p. :  ill. ;  21 cm. 
 - Century psychology series .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> Rs. 131.40 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychometrics
<br/><br/><label>Dewey Class. No.: </label>152.8