Vaus David De <br/><br/>
Research Design 

 - London  Sage Publication  2007 
 - 358 
<br/><br/><label>ISBN: </label>9780761944874 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology
<br/><br/><label>Dewey Class. No.: </label>001.42 VAU