Principles of Electricity: Applied to telephone and telegraph work /  
American Telephone  Telegraph 
 - 1a 
 - U.S.A.,   American Telephone Telegraph  19390000 
 - 346  ilus 
<br/><br/> Texto en Biblioteca Central 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ELECTRICIDAD-TRANSMISION<br/>TELECOMUNICACIONES
<br/><br/><label>Dewey Class. No.: </label>621.384 15  / P957