Pearson, J. C. Nelson, P. E. <br/><br/>
An introduction to human communication  understanding & sharing 

 - Seventh 
 - Irwin McGraw-Hill  New York 
 - 389p.  fig. 
<br/><br/><label>Nat. Bib. No.: </label>6365 
<br/><br/><label>Universal Decimal Class. No.: </label>PEA  / 347.763