Heck Ronald H <br/><br/>
Introduction to multilevel modeling techniques. 

 - 2 
 - New York     Routledge        2009 
 - xi,268p.  cm. 
 - Quantitative methodology series .
<br/><br/><label>Standard No.: </label>33813 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Sigma:f:(B), P9