Hancock, John C. <br/><br/>
An  Introduction To The Principles Of  Communication Theory 
/ by  John C. Hancock. 
 - 1st ed. 
 - New Delhi:  Tata McGraw-Hill Publishing Company LTD,  1961 
 - x, 253p. 
<br/><br/><label>ISBN: </label>0070993416 
<br/><br/><label>Dewey Class. No.: </label>621.38  / HAN/A