Elldin, A. <br/><br/>
Automatic telephone exchanges based on the link connection principle  switch calculations general survey 

 - Sweden  Telefonaktiebolaget L M ericsson 
 - 47p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication engineering<br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>621.382  / ELL