Danielson, George Lord. Walker, R. S. ( Ronald Slee ) <br/><br/>
Telecommunications systems for technicians 1 / 
G. L. Danielson, R. S. Walker. 
 -  Newnes-Butterworths] [Sevenoaks, Eng.  1979  1979 
 - 103 p. :ill. ;25 cm. 
 - Newnes-Butterworths technician series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems.--TK
<br/><br/><label>LC Class. No.: </label>TK5101.D35 1979