Penfold, R. A. <br/><br/>
Popular electronic projects  [Books]. 
R. A. Penfold. 
 - London  Bernard Babani (publishing) Ltd  1978 
 - Pages: 135 
<br/><br/><label>ISBN: </label>0859340538  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>Electronic apparatus and appliances -- Amateurs' manuals.
<br/><br/><label>Dewey Class. No.: </label>TK/9965  / PEN