Donnelly, E. L <br/><br/>
Electrical installation 
 theory and practice 

 - 3rd ed. 
 - London  Harrap  1980 
 - x, 228p. : ill. 
<br/><br/><label>ISBN: </label>0245536272 
<br/><br/><label>LC Class. No.: </label>TK 4255 Don