Soar, R.N. <br/><br/>
50 simple L.E.D. circuits /  [Books]. 
R.N. Soar.  
 - London :   Babani Press,   1977. 
 - 62p. :  ill. ;  18 cm. 
 - Babani Press ;  BP42 .
<br/><br/><label>ISBN: </label>0859340430 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light emitting diodes--circuits.