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>ISBN: </label> 22.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication Engineering<br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>621.382  / ELL