By Osterlind, Steven J <br/><br/>
Differential item functioning 

 - 2nd 
 - New Delhi  Sage  2009 
 - x; 87p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential item functioning
<br/><br/><label>Dewey Class. No.: </label>519.5  / OST