Smith, Robert B. <br/><br/>
Qualitative methods : handbook of social science methods / 

 - Cambridge  Ballinger Publishing Co.  1982 
 - 333p. 
 -  Vol. II .
<br/><br/><label>ISBN: </label>0829000860 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences - Methodology