Carlson, A. Bruce <br/><br/>
Comunication systems: an introdution to signals and noise in electrical comunication 
by A.Bruce Carlson 
 - \\  2nd ed 
 -  McGraw - Hill Kogakusha,Ltd; Tokyo  1975 
 - xv,495p.:diagrs,. ill., tables. 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>007009957X