Electronics letters 

 - London  Institution of electrical engineers  1965 
 -  vol.1, no.1 .
<br/><br/> Lib. has v.15 (1979)- v.16 (1980), v.25 (1989)-v26(1990) 
<br/><br/><label>Universal Decimal Class. No.: </label>621.38(05)  / ELE