Wiesner, Lothar  <br/><br/>
Telegraph and data transmission over shortwave radio links   fundamental principles and networks 
Lothar Wiesner 
 - 2nd ed.  
 - London  Siemens Aktiengesellschaft Heyden & Son Ltd.  1981 
 - 199p.  biblio; figs; illus; index 
<br/><br/><label>ISBN: </label>0-85501-291-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data TransmissionRadio,shortwaveShortwave Radio Links
<br/><br/><label>Universal Decimal Class. No.: </label>621.394.5  / WEI