Kassler,R. <br/><br/>
The Theory of communication : an instructional aid for workers' educators and trade unionists  [Books]. 
R. Kassler. 
 - 2nd ed. 
 - Geneva  International Labour Organisation.  1983 
 - Pages: 55 
<br/><br/><label>ISBN: </label>9221009017  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>Communication.
<br/><br/><label>Dewey Class. No.: </label>P/90  / KAS