Albert, A. L. <br/><br/>
Electrical communication 

 - 3rd ed 
 - London  John Wiley  1950 
 - v,539p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Electrical communication
<br/><br/><label>Dewey Class. No.: </label>621.38  / A29E