Keats J A <br/><br/>
Statistical theory of objective test scores 

 - Melbourne, Austraila  Australian Council for Education Research   1951 
 - 45p 
 - Australian council for education research .
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational - Tests and Measurement