DeFrance, J. J. <br/><br/>
Communications electronics circuits   
by J. J. De France. 
 - 2nd 
 - San Francisco  Rinehart  1972 
 - xix, 580p. 
<br/><br/><label>ISBN: </label>0030831393 
<br/><br/><label>Dewey Class. No.: </label>621.38132  / N723 R(T)