Vaus David de <br/><br/>
Research designs   

 - 
 - London  Sage  2006 
 - 422 p.  27 cm. 
 -  3 .
<br/><br/>  Sage benchmarks in social research methods 
<br/><br/>  Research Methodology, Social Sciences -Research 
<br/><br/><label>ISBN: </label>0761944877 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Sciences -Research<br/>Research Methodology
<br/><br/><label>Dewey Class. No.: </label>300.72  / VAU