Krippendorff Klaus <br/><br/>
Content analysis an introduction to its methodology 

 - London  sage Publications England        1980 
 - 191p  cm. 
<br/><br/><label>ISBN: </label>0803914989 
<br/><br/><label>Standard No.: </label>17,446 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Yb4, M0