rayudu, c.s. <br/><br/>
communication  

 - 8 
 - new delhi   himalaya publishing house  2007 
 - 712p; 22cmsp 
<br/><br/><label>ISBN: </label>978-81-8488-132-5 
<br/><br/><label>Dewey Class. No.: </label>651.7  / ray/com