David, Allan. <br/><br/>
Electrical installations / NVQ and Technical Certificate / 
by David Allan. 
 - Book 1. 
 - UK :  Heinemann,  c2005. 
 - [342] pages :  illustrations ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical science.