Oppenheim A N <br/><br/>
Questionnaire design and attitude measurement. 

 - London  Heinemann         1966 
 - 298p.  cm. 
<br/><br/><label>Standard No.: </label>36992 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>S:7:b6, K6