Claus Moser <br/><br/>
Survey methods in social investigation 

 - 2nd Ed 
 - London  Heinemann Educational Books Limited  1980 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0-435-82605-0 
<br/><br/><label>Dewey Class. No.: </label>300.72  / MOS