Huisman Mark <br/><br/>
Item nonresponse    Occurrence, causes and imputation of missing answers to test items.      

 - Netherlands  DSWO Press        1999 
 - 185p.  cm. 
<br/><br/><label>Standard No.: </label>33699 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>S:3:6, N9