Silverman David Au. <br/><br/>
Interrpreting qualitative data. 
Silverman David Au. 
 -  2001 
<br/><br/><label>Standard No.: </label>90251 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Sigma:f, P1