LITTELL, Julia <br/><br/>
Systematic reviews and meta- analysis 
Julia Littell. 
 - New York.  Oxford unversity press,  c 2008. 
 - 202p.:  Ill.; 
<br/><br/>Includes bibliographical reference and index. 
<br/><br/><label>ISBN: </label>9780195326543 
<br/><br/><label>Dewey Class. No.: </label>001.42