Sinclair, Ian Robertson. <br/><br/>
Switches /  [Books]. 
Ian Sinclair.  
 - London :   BSP Professional,   1988. 
 - viii, 104p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0632020687 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Switching circuits.