Sapford,Roger <br/><br/>
Data collection and analysis 

 - 2nd.ed. 
 - London  SAGE Publication  2006 
 - 330 
<br/><br/> Include Index 
<br/><br/><label>ISBN: </label>0761943625 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>300.727	  / SAP-D